Calculus Examples

${(x + y)}^{2} {(x - y)}^{2} = x^{4} + y^{4}$

Step 1

Differentiate both sides of the equation.

$\frac{d}{d y} ({(x + y)}^{2} {(x - y)}^{2}) = \frac{d}{d y} (x^{4} + y^{4})$

Step 2

Differentiate the left side of the equation.

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Step 2.1

Rewrite ${(x + y)}^{2}$ as $(x + y) (x + y)$ .

$\frac{d}{d y} [(x + y) (x + y) {(x - y)}^{2}]$

Step 2.2

Expand $(x + y) (x + y)$ using the FOIL Method.

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Step 2.2.1

Apply the distributive property.

$\frac{d}{d y} [(x (x + y) + y (x + y)) {(x - y)}^{2}]$

Step 2.2.2

Apply the distributive property.

$\frac{d}{d y} [(x \cdot x + x y + y (x + y)) {(x - y)}^{2}]$

Step 2.2.3

Apply the distributive property.

$\frac{d}{d y} [(x \cdot x + x y + y x + y \cdot y) {(x - y)}^{2}]$

Step 2.3

Simplify and combine like terms.

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Step 2.3.1

Simplify each term.

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Step 2.3.1.1

Multiply $x$ by $x$ .

$\frac{d}{d y} [(x^{2} + x y + y x + y \cdot y) {(x - y)}^{2}]$

Step 2.3.1.2

Multiply $y$ by $y$ .

$\frac{d}{d y} [(x^{2} + x y + y x + y^{2}) {(x - y)}^{2}]$

Step 2.3.2

Add $x y$ and $y x$ .

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Step 2.3.2.1

Reorder $y$ and $x$ .

$\frac{d}{d y} [(x^{2} + x y + x y + y^{2}) {(x - y)}^{2}]$

Step 2.3.2.2

Add $x y$ and $x y$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) {(x - y)}^{2}]$

Step 2.4

Rewrite ${(x - y)}^{2}$ as $(x - y) (x - y)$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) ((x - y) (x - y))]$

Step 2.5

Expand $(x - y) (x - y)$ using the FOIL Method.

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Step 2.5.1

Apply the distributive property.

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x (x - y) - y (x - y))]$

Step 2.5.2

Apply the distributive property.

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x \cdot x + x (- y) - y (x - y))]$

Step 2.5.3

Apply the distributive property.

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x \cdot x + x (- y) - y x - y (- y))]$

Step 2.6

Simplify and combine like terms.

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Step 2.6.1

Simplify each term.

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Step 2.6.1.1

Multiply $x$ by $x$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} + x (- y) - y x - y (- y))]$

Step 2.6.1.2

Rewrite using the commutative property of multiplication.

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - y x - y (- y))]$

Step 2.6.1.3

Rewrite using the commutative property of multiplication.

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - y x - 1 \cdot - 1 y \cdot y)]$

Step 2.6.1.4

Multiply $y$ by $y$ by adding the exponents.

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Step 2.6.1.4.1

Move $y$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - y x - 1 \cdot - 1 (y \cdot y))]$

Step 2.6.1.4.2

Multiply $y$ by $y$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - y x - 1 \cdot - 1 y^{2})]$

Step 2.6.1.5

Multiply $- 1$ by $- 1$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - y x + 1 y^{2})]$

Step 2.6.1.6

Multiply $y^{2}$ by $1$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - y x + y^{2})]$

Step 2.6.2

Subtract $y x$ from $- x y$ .

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Step 2.6.2.1

Move $y$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - x y - 1 x y + y^{2})]$

Step 2.6.2.2

Subtract $x y$ from $- x y$ .

$\frac{d}{d y} [(x^{2} + 2 x y + y^{2}) (x^{2} - 2 x y + y^{2})]$

Step 2.7

Differentiate using the Product Rule which states that $\frac{d}{d y} [f (y) g (y)]$ is $f (y) \frac{d}{d y} [g (y)] + g (y) \frac{d}{d y} [f (y)]$ where $f (y) = x^{2} + 2 x y + y^{2}$ and $g (y) = x^{2} - 2 x y + y^{2}$ .

$(x^{2} + 2 x y + y^{2}) \frac{d}{d y} [x^{2} - 2 x y + y^{2}] + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.8

By the Sum Rule, the derivative of $x^{2} - 2 x y + y^{2}$ with respect to $y$ is $\frac{d}{d y} [x^{2}] + \frac{d}{d y} [- 2 x y] + \frac{d}{d y} [y^{2}]$ .

$(x^{2} + 2 x y + y^{2}) (\frac{d}{d y} [x^{2}] + \frac{d}{d y} [- 2 x y] + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.9

Differentiate using the chain rule, which states that $\frac{d}{d y} [f (g (y))]$ is $f' (g (y)) g' (y)$ where $f (y) = y^{2}$ and $g (y) = x$ .

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Step 2.9.1

To apply the Chain Rule, set $u_{1}$ as $x$ .

$(x^{2} + 2 x y + y^{2}) (\frac{d}{d u_{1}} [{u_{1}}^{2}] \frac{d}{d y} [x] + \frac{d}{d y} [- 2 x y] + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.9.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{1}} [{u_{1}}^{n}]$ is $n {u_{1}}^{n - 1}$ where $n = 2$ .

$(x^{2} + 2 x y + y^{2}) (2 u_{1} \frac{d}{d y} [x] + \frac{d}{d y} [- 2 x y] + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.9.3

Replace all occurrences of $u_{1}$ with $x$ .

$(x^{2} + 2 x y + y^{2}) (2 x \frac{d}{d y} [x] + \frac{d}{d y} [- 2 x y] + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.10

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' + \frac{d}{d y} [- 2 x y] + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.11

Since $- 2$ is constant with respect to $y$ , the derivative of $- 2 x y$ with respect to $y$ is $- 2 \frac{d}{d y} [x y]$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 \frac{d}{d y} [x y] + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.12

Differentiate using the Product Rule which states that $\frac{d}{d y} [f (y) g (y)]$ is $f (y) \frac{d}{d y} [g (y)] + g (y) \frac{d}{d y} [f (y)]$ where $f (y) = x$ and $g (y) = y$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x \frac{d}{d y} [y] + y \frac{d}{d y} [x]) + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.13

Differentiate using the Power Rule.

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Step 2.13.1

Differentiate using the Power Rule which states that $\frac{d}{d y} [y^{n}]$ is $n y^{n - 1}$ where $n = 1$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x \cdot 1 + y \frac{d}{d y} [x]) + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.13.2

Multiply $x$ by $1$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y \frac{d}{d y} [x]) + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.14

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + \frac{d}{d y} [y^{2}]) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.15

Differentiate.

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Step 2.15.1

Differentiate using the Power Rule which states that $\frac{d}{d y} [y^{n}]$ is $n y^{n - 1}$ where $n = 2$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) \frac{d}{d y} [x^{2} + 2 x y + y^{2}]$

Step 2.15.2

By the Sum Rule, the derivative of $x^{2} + 2 x y + y^{2}$ with respect to $y$ is $\frac{d}{d y} [x^{2}] + \frac{d}{d y} [2 x y] + \frac{d}{d y} [y^{2}]$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (\frac{d}{d y} [x^{2}] + \frac{d}{d y} [2 x y] + \frac{d}{d y} [y^{2}])$

Step 2.16

Differentiate using the chain rule, which states that $\frac{d}{d y} [f (g (y))]$ is $f' (g (y)) g' (y)$ where $f (y) = y^{2}$ and $g (y) = x$ .

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Step 2.16.1

To apply the Chain Rule, set $u_{2}$ as $x$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (\frac{d}{d u_{2}} [{u_{2}}^{2}] \frac{d}{d y} [x] + \frac{d}{d y} [2 x y] + \frac{d}{d y} [y^{2}])$

Step 2.16.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{2}} [{u_{2}}^{n}]$ is $n {u_{2}}^{n - 1}$ where $n = 2$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 u_{2} \frac{d}{d y} [x] + \frac{d}{d y} [2 x y] + \frac{d}{d y} [y^{2}])$

Step 2.16.3

Replace all occurrences of $u_{2}$ with $x$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x \frac{d}{d y} [x] + \frac{d}{d y} [2 x y] + \frac{d}{d y} [y^{2}])$

Step 2.17

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + \frac{d}{d y} [2 x y] + \frac{d}{d y} [y^{2}])$

Step 2.18

Since $2$ is constant with respect to $y$ , the derivative of $2 x y$ with respect to $y$ is $2 \frac{d}{d y} [x y]$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 \frac{d}{d y} [x y] + \frac{d}{d y} [y^{2}])$

Step 2.19

Differentiate using the Product Rule which states that $\frac{d}{d y} [f (y) g (y)]$ is $f (y) \frac{d}{d y} [g (y)] + g (y) \frac{d}{d y} [f (y)]$ where $f (y) = x$ and $g (y) = y$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 (x \frac{d}{d y} [y] + y \frac{d}{d y} [x]) + \frac{d}{d y} [y^{2}])$

Step 2.20

Differentiate using the Power Rule.

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Step 2.20.1

Differentiate using the Power Rule which states that $\frac{d}{d y} [y^{n}]$ is $n y^{n - 1}$ where $n = 1$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 (x \cdot 1 + y \frac{d}{d y} [x]) + \frac{d}{d y} [y^{2}])$

Step 2.20.2

Multiply $x$ by $1$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 (x + y \frac{d}{d y} [x]) + \frac{d}{d y} [y^{2}])$

Step 2.21

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 (x + y x') + \frac{d}{d y} [y^{2}])$

Step 2.22

Differentiate using the Power Rule which states that $\frac{d}{d y} [y^{n}]$ is $n y^{n - 1}$ where $n = 2$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 (x + y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 (x + y x') + 2 y)$

Step 2.23

Simplify.

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Step 2.23.1

Apply the distributive property.

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 (y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 (x + y x') + 2 y)$

Step 2.23.2

Apply the distributive property.

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 (y x') + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 (y x') + 2 y)$

Step 2.23.3

Factor $1$ out of $(x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y)$ .

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Step 2.23.3.1

Factor $1$ out of $(x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y)$ .

$1 ((x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y)) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y)$

Step 2.23.3.2

Factor $1$ out of $(x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y)$ .

$1 ((x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y)) + 1 ((x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y))$

Step 2.23.3.3

Factor $1$ out of $1 ((x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y)) + 1 ((x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y))$ .

$1 ((x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y))$

Step 2.23.4

Multiply $(x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y)$ by $1$ .

$(x^{2} + 2 x y + y^{2}) (2 x x' - 2 x - 2 y x' + 2 y) + (x^{2} - 2 x y + y^{2}) (2 x x' + 2 x + 2 y x' + 2 y)$

Step 2.23.5

Reorder terms.

$(2 x x' - 2 x - 2 y x' + 2 y) (x^{2} + 2 x y + y^{2}) + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6

Simplify each term.

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Step 2.23.6.1

Expand $(2 x x' - 2 x - 2 y x' + 2 y) (x^{2} + 2 x y + y^{2})$ by multiplying each term in the first expression by each term in the second expression.

$2 x x' x^{2} + 2 x x' (2 x y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2

Simplify each term.

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Step 2.23.6.2.1

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.23.6.2.1.1

Move $x^{2}$ .

$2 (x^{2} x) x' + 2 x x' (2 x y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.1.2

Multiply $x^{2}$ by $x$ .

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Step 2.23.6.2.1.2.1

Raise $x$ to the power of $1$ .

$2 (x^{2} x^{1}) x' + 2 x x' (2 x y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{2 + 1} x' + 2 x x' (2 x y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.1.3

Add $2$ and $1$ .

$2 x^{3} x' + 2 x x' (2 x y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.2

Multiply $x$ by $x$ by adding the exponents.

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Step 2.23.6.2.2.1

Move $x$ .

$2 x^{3} x' + 2 (x \cdot x) x' (2 y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.2.2

Multiply $x$ by $x$ .

$2 x^{3} x' + 2 x^{2} x' (2 y) + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.3

Multiply $2$ by $2$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x \cdot x^{2} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.4

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.23.6.2.4.1

Move $x^{2}$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 (x^{2} x) - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.4.2

Multiply $x^{2}$ by $x$ .

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Step 2.23.6.2.4.2.1

Raise $x$ to the power of $1$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 (x^{2} x^{1}) - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.4.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{2 + 1} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.4.3

Add $2$ and $1$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 2 x (2 x y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.5

Multiply $x$ by $x$ by adding the exponents.

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Step 2.23.6.2.5.1

Move $x$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 2 (x \cdot x) (2 y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.5.2

Multiply $x$ by $x$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 2 x^{2} (2 y) - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.6

Rewrite using the commutative property of multiplication.

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 2 \cdot 2 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.7

Multiply $- 2$ by $2$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 2 y x' (2 x y) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.8

Multiply $y$ by $y$ by adding the exponents.

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Step 2.23.6.2.8.1

Move $y$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 2 (y \cdot y) x' (2 x) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.8.2

Multiply $y$ by $y$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 2 y^{2} x' (2 x) - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.9

Multiply $2$ by $- 2$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y x' y^{2} + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.10

Multiply $y$ by $y^{2}$ by adding the exponents.

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Step 2.23.6.2.10.1

Move $y^{2}$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 (y^{2} y) x' + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.10.2

Multiply $y^{2}$ by $y$ .

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Step 2.23.6.2.10.2.1

Raise $y$ to the power of $1$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 (y^{2} y^{1}) x' + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.10.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{2 + 1} x' + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.10.3

Add $2$ and $1$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 2 y (2 x y) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.11

Multiply $y$ by $y$ by adding the exponents.

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Step 2.23.6.2.11.1

Move $y$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 2 (y \cdot y) (2 x) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.11.2

Multiply $y$ by $y$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 2 y^{2} (2 x) + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.12

Rewrite using the commutative property of multiplication.

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 2 \cdot 2 y^{2} x + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.13

Multiply $2$ by $2$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 y \cdot y^{2} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.14

Multiply $y$ by $y^{2}$ by adding the exponents.

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Step 2.23.6.2.14.1

Move $y^{2}$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 (y^{2} y) + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.14.2

Multiply $y^{2}$ by $y$ .

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Step 2.23.6.2.14.2.1

Raise $y$ to the power of $1$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 (y^{2} y^{1}) + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.14.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 y^{2 + 1} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.2.14.3

Add $2$ and $1$ .

$2 x^{3} x' + 4 x^{2} x' y + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} - 2 y x' x^{2} - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.3

Move $y$ .

$2 x^{3} x' + 2 x x' y^{2} - 2 x^{3} - 4 x^{2} y - 2 x y^{2} + 4 x^{2} y x' - 2 x^{2} y x' - 4 y^{2} x' x - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.4

Move $y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 4 x^{2} y - 2 x y^{2} + 4 x^{2} y x' - 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' - 2 y^{3} x' + 2 y x^{2} + 4 y^{2} x + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.5

Add $- 4 x^{2} y$ and $2 y x^{2}$ .

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Step 2.23.6.5.1

Move $y$ .

$2 x^{3} x' - 2 x^{3} - 4 x^{2} y + 2 x^{2} y - 2 x y^{2} + 4 x^{2} y x' - 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' - 2 y^{3} x' + 4 y^{2} x + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.5.2

Add $- 4 x^{2} y$ and $2 x^{2} y$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y - 2 x y^{2} + 4 x^{2} y x' - 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' - 2 y^{3} x' + 4 y^{2} x + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.6

Add $- 2 x y^{2}$ and $4 y^{2} x$ .

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Step 2.23.6.6.1

Move $y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y - 2 x y^{2} + 4 x y^{2} + 4 x^{2} y x' - 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.6.2

Add $- 2 x y^{2}$ and $4 x y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 4 x^{2} y x' - 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.7

Subtract $2 x^{2} y x'$ from $4 x^{2} y x'$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.8

Subtract $4 x y^{2} x'$ from $2 x y^{2} x'$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + (2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$

Step 2.23.6.9

Expand $(2 x x' + 2 x + 2 y x' + 2 y) (x^{2} - 2 x y + y^{2})$ by multiplying each term in the first expression by each term in the second expression.

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x x' x^{2} + 2 x x' (- 2 x y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10

Simplify each term.

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Step 2.23.6.10.1

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.23.6.10.1.1

Move $x^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 (x^{2} x) x' + 2 x x' (- 2 x y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.1.2

Multiply $x^{2}$ by $x$ .

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Step 2.23.6.10.1.2.1

Raise $x$ to the power of $1$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 (x^{2} x^{1}) x' + 2 x x' (- 2 x y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{2 + 1} x' + 2 x x' (- 2 x y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.1.3

Add $2$ and $1$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x x' (- 2 x y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.2

Multiply $x$ by $x$ by adding the exponents.

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Step 2.23.6.10.2.1

Move $x$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 (x \cdot x) x' (- 2 y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.2.2

Multiply $x$ by $x$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{2} x' (- 2 y) + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.3

Multiply $- 2$ by $2$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x \cdot x^{2} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.4

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 2.23.6.10.4.1

Move $x^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 (x^{2} x) + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.4.2

Multiply $x^{2}$ by $x$ .

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Step 2.23.6.10.4.2.1

Raise $x$ to the power of $1$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 (x^{2} x^{1}) + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.4.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{2 + 1} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.4.3

Add $2$ and $1$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} + 2 x (- 2 x y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.5

Multiply $x$ by $x$ by adding the exponents.

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Step 2.23.6.10.5.1

Move $x$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} + 2 (x \cdot x) (- 2 y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.5.2

Multiply $x$ by $x$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} + 2 x^{2} (- 2 y) + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.6

Rewrite using the commutative property of multiplication.

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} + 2 \cdot - 2 x^{2} y + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.7

Multiply $2$ by $- 2$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} + 2 y x' (- 2 x y) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.8

Multiply $y$ by $y$ by adding the exponents.

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Step 2.23.6.10.8.1

Move $y$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} + 2 (y \cdot y) x' (- 2 x) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.8.2

Multiply $y$ by $y$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} + 2 y^{2} x' (- 2 x) + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.9

Multiply $- 2$ by $2$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} - 4 y^{2} x' x + 2 y x' y^{2} + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.10

Multiply $y$ by $y^{2}$ by adding the exponents.

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Step 2.23.6.10.10.1

Move $y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} - 4 y^{2} x' x + 2 (y^{2} y) x' + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.10.2

Multiply $y^{2}$ by $y$ .

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Step 2.23.6.10.10.2.1

Raise $y$ to the power of $1$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} - 4 y^{2} x' x + 2 (y^{2} y^{1}) x' + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.10.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} - 4 y^{2} x' x + 2 y^{2 + 1} x' + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.10.3

Add $2$ and $1$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 4 x^{2} x' y + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} + 2 y x' x^{2} - 4 y^{2} x' x + 2 y^{3} x' + 2 y x^{2} + 2 y (- 2 x y) + 2 y \cdot y^{2}$

Step 2.23.6.10.11

Multiply $y$ by $y$ by adding the exponents.

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Step 2.23.6.10.11.1

Move $y$ .

Step 2.23.6.10.11.2

Multiply $y$ by $y$ .

Step 2.23.6.10.12

Rewrite using the commutative property of multiplication.

Step 2.23.6.10.13

Multiply $2$ by $- 2$ .

Step 2.23.6.10.14

Multiply $y$ by $y^{2}$ by adding the exponents.

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Step 2.23.6.10.14.1

Move $y^{2}$ .

Step 2.23.6.10.14.2

Multiply $y^{2}$ by $y$ .

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Step 2.23.6.10.14.2.1

Raise $y$ to the power of $1$ .

Step 2.23.6.10.14.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

Step 2.23.6.10.14.3

Add $2$ and $1$ .

Step 2.23.6.11

Move $y$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x x' y^{2} + 2 x^{3} - 4 x^{2} y + 2 x y^{2} - 4 x^{2} y x' + 2 x^{2} y x' - 4 y^{2} x' x + 2 y^{3} x' + 2 y x^{2} - 4 y^{2} x + 2 y^{3}$

Step 2.23.6.12

Move $y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 4 x^{2} y + 2 x y^{2} - 4 x^{2} y x' + 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' + 2 y^{3} x' + 2 y x^{2} - 4 y^{2} x + 2 y^{3}$

Step 2.23.6.13

Add $- 4 x^{2} y$ and $2 y x^{2}$ .

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Step 2.23.6.13.1

Move $y$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 4 x^{2} y + 2 x^{2} y + 2 x y^{2} - 4 x^{2} y x' + 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' + 2 y^{3} x' - 4 y^{2} x + 2 y^{3}$

Step 2.23.6.13.2

Add $- 4 x^{2} y$ and $2 x^{2} y$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 2 x^{2} y + 2 x y^{2} - 4 x^{2} y x' + 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' + 2 y^{3} x' - 4 y^{2} x + 2 y^{3}$

Step 2.23.6.14

Subtract $4 y^{2} x$ from $2 x y^{2}$ .

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Step 2.23.6.14.1

Move $y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 2 x^{2} y + 2 x y^{2} - 4 x y^{2} - 4 x^{2} y x' + 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.6.14.2

Subtract $4 x y^{2}$ from $2 x y^{2}$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 2 x^{2} y - 2 x y^{2} - 4 x^{2} y x' + 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.6.15

Add $- 4 x^{2} y x'$ and $2 x^{2} y x'$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 2 x^{2} y - 2 x y^{2} - 2 x^{2} y x' + 2 x y^{2} x' - 4 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.6.16

Subtract $4 x y^{2} x'$ from $2 x y^{2} x'$ .

$2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 2 x^{2} y - 2 x y^{2} - 2 x^{2} y x' - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7

Combine the opposite terms in $2 x^{3} x' - 2 x^{3} - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 2 x^{3} - 2 x^{2} y - 2 x y^{2} - 2 x^{2} y x' - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$ .

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Step 2.23.7.1

Add $- 2 x^{3}$ and $2 x^{3}$ .

$2 x^{3} x' - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' + 0 - 2 x^{2} y - 2 x y^{2} - 2 x^{2} y x' - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7.2

Add $2 x^{3} x' - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x'$ and $0$ .

$2 x^{3} x' - 2 x^{2} y + 2 x y^{2} + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y - 2 x y^{2} - 2 x^{2} y x' - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7.3

Subtract $2 x y^{2}$ from $2 x y^{2}$ .

$2 x^{3} x' - 2 x^{2} y + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y + 0 - 2 x^{2} y x' - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7.4

Add $2 x^{3} x' - 2 x^{2} y + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y$ and $0$ .

$2 x^{3} x' - 2 x^{2} y + 2 x^{2} y x' - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y - 2 x^{2} y x' - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7.5

Subtract $2 x^{2} y x'$ from $2 x^{2} y x'$ .

$2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y + 0 - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7.6

Add $2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y$ and $0$ .

$2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' - 2 y^{3} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 2 y^{3} x' + 2 y^{3}$

Step 2.23.7.7

Add $- 2 y^{3} x'$ and $2 y^{3} x'$ .

$2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 0 + 2 y^{3}$

Step 2.23.7.8

Add $2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x'$ and $0$ .

$2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 2 y^{3} + 2 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 2 y^{3}$

Step 2.23.8

Add $2 x^{3} x'$ and $2 x^{3} x'$ .

$- 2 x^{2} y - 2 x y^{2} x' + 2 y^{3} + 4 x^{3} x' - 2 x^{2} y - 2 x y^{2} x' + 2 y^{3}$

Step 2.23.9

Subtract $2 x^{2} y$ from $- 2 x^{2} y$ .

$- 2 x y^{2} x' + 2 y^{3} + 4 x^{3} x' - 4 x^{2} y - 2 x y^{2} x' + 2 y^{3}$

Step 2.23.10

Subtract $2 x y^{2} x'$ from $- 2 x y^{2} x'$ .

$2 y^{3} + 4 x^{3} x' - 4 x^{2} y - 4 x y^{2} x' + 2 y^{3}$

Step 2.23.11

Add $2 y^{3}$ and $2 y^{3}$ .

$4 y^{3} + 4 x^{3} x' - 4 x^{2} y - 4 x y^{2} x'$

Step 3

Differentiate the right side of the equation.

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Step 3.1

By the Sum Rule, the derivative of $x^{4} + y^{4}$ with respect to $y$ is $\frac{d}{d y} [x^{4}] + \frac{d}{d y} [y^{4}]$ .

$\frac{d}{d y} [x^{4}] + \frac{d}{d y} [y^{4}]$

Step 3.2

Evaluate $\frac{d}{d y} [x^{4}]$ .

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Step 3.2.1

Differentiate using the chain rule, which states that $\frac{d}{d y} [f (g (y))]$ is $f' (g (y)) g' (y)$ where $f (y) = y^{4}$ and $g (y) = x$ .

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Step 3.2.1.1

To apply the Chain Rule, set $u$ as $x$ .

$\frac{d}{d u} [u^{4}] \frac{d}{d y} [x] + \frac{d}{d y} [y^{4}]$

Step 3.2.1.2

Differentiate using the Power Rule which states that $\frac{d}{d u} [u^{n}]$ is $n u^{n - 1}$ where $n = 4$ .

$4 u^{3} \frac{d}{d y} [x] + \frac{d}{d y} [y^{4}]$

Step 3.2.1.3

Replace all occurrences of $u$ with $x$ .

$4 x^{3} \frac{d}{d y} [x] + \frac{d}{d y} [y^{4}]$

Step 3.2.2

Rewrite $\frac{d}{d y} [x]$ as $x'$ .

$4 x^{3} x' + \frac{d}{d y} [y^{4}]$

Step 3.3

Differentiate using the Power Rule.

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Step 3.3.1

Differentiate using the Power Rule which states that $\frac{d}{d y} [y^{n}]$ is $n y^{n - 1}$ where $n = 4$ .

$4 x^{3} x' + 4 y^{3}$

Step 3.3.2

Reorder terms.

$4 y^{3} + 4 x^{3} x'$

Step 4

Reform the equation by setting the left side equal to the right side.

$4 y^{3} + 4 x^{3} x' - 4 x^{2} y - 4 x y^{2} x' = 4 y^{3} + 4 x^{3} x'$

Step 5

Solve for $x'$ .

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Step 5.1

Move all terms containing $x'$ to the left side of the equation.

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Step 5.1.1

Subtract $4 x^{3} x'$ from both sides of the equation.

$4 y^{3} + 4 x^{3} x' - 4 x^{2} y - 4 x y^{2} x' - 4 x^{3} x' = 4 y^{3}$

Step 5.1.2

Combine the opposite terms in $4 y^{3} + 4 x^{3} x' - 4 x^{2} y - 4 x y^{2} x' - 4 x^{3} x'$ .

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Step 5.1.2.1

Subtract $4 x^{3} x'$ from $4 x^{3} x'$ .

$4 y^{3} - 4 x^{2} y - 4 x y^{2} x' + 0 = 4 y^{3}$

Step 5.1.2.2

Add $4 y^{3} - 4 x^{2} y - 4 x y^{2} x'$ and $0$ .

$4 y^{3} - 4 x^{2} y - 4 x y^{2} x' = 4 y^{3}$

Step 5.2

Move all terms not containing $x'$ to the right side of the equation.

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Step 5.2.1

Subtract $4 y^{3}$ from both sides of the equation.

$- 4 x^{2} y - 4 x y^{2} x' = 4 y^{3} - 4 y^{3}$

Step 5.2.2

Add $4 x^{2} y$ to both sides of the equation.

$- 4 x y^{2} x' = 4 y^{3} - 4 y^{3} + 4 x^{2} y$

Step 5.2.3

Subtract $4 y^{3}$ from $4 y^{3}$ .

$- 4 x y^{2} x' = 0 + 4 x^{2} y$

Step 5.2.4

Add $0$ and $4 x^{2} y$ .

$- 4 x y^{2} x' = 4 x^{2} y$

Step 5.3

Divide each term in $- 4 x y^{2} x' = 4 x^{2} y$ by $- 4 x y^{2}$ and simplify.

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Step 5.3.1

Divide each term in $- 4 x y^{2} x' = 4 x^{2} y$ by $- 4 x y^{2}$ .

$\frac{- 4 x y^{2} x'}{- 4 x y^{2}} = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.2

Simplify the left side.

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Step 5.3.2.1

Cancel the common factor of $- 4$ .

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Step 5.3.2.1.1

Cancel the common factor.

$\frac{- 4 x y^{2} x'}{- 4 x y^{2}} = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.2.1.2

Rewrite the expression.

$\frac{x y^{2} x'}{x y^{2}} = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.2.2

Cancel the common factor of $x$ .

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Step 5.3.2.2.1

Cancel the common factor.

$\frac{x y^{2} x'}{x y^{2}} = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.2.2.2

Rewrite the expression.

$\frac{y^{2} x'}{y^{2}} = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.2.3

Cancel the common factor of $y^{2}$ .

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Step 5.3.2.3.1

Cancel the common factor.

$\frac{y^{2} x'}{y^{2}} = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.2.3.2

Divide $x'$ by $1$ .

$x' = \frac{4 x^{2} y}{- 4 x y^{2}}$

Step 5.3.3

Simplify the right side.

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Step 5.3.3.1

Cancel the common factor of $4$ and $- 4$ .

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Step 5.3.3.1.1

Factor $4$ out of $4 x^{2} y$ .

$x' = \frac{4 (x^{2} y)}{- 4 x y^{2}}$

Step 5.3.3.1.2

Cancel the common factors.

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Step 5.3.3.1.2.1

Factor $4$ out of $- 4 x y^{2}$ .

$x' = \frac{4 (x^{2} y)}{4 (- x y^{2})}$

Step 5.3.3.1.2.2

Cancel the common factor.

$x' = \frac{4 (x^{2} y)}{4 (- x y^{2})}$

Step 5.3.3.1.2.3

Rewrite the expression.

$x' = \frac{x^{2} y}{- x y^{2}}$

Step 5.3.3.2

Cancel the common factor of $x^{2}$ and $x$ .

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Step 5.3.3.2.1

Factor $x$ out of $x^{2} y$ .

$x' = \frac{x (x y)}{- x y^{2}}$

Step 5.3.3.2.2

Cancel the common factors.

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Step 5.3.3.2.2.1

Factor $x$ out of $- x y^{2}$ .

$x' = \frac{x (x y)}{x (- y^{2})}$

Step 5.3.3.2.2.2

Cancel the common factor.

$x' = \frac{x (x y)}{x (- y^{2})}$

Step 5.3.3.2.2.3

Rewrite the expression.

$x' = \frac{x y}{- y^{2}}$

Step 5.3.3.3

Cancel the common factor of $y$ and $y^{2}$ .

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Step 5.3.3.3.1

Factor $y$ out of $x y$ .

$x' = \frac{y x}{- y^{2}}$

Step 5.3.3.3.2

Cancel the common factors.

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Step 5.3.3.3.2.1

Factor $y$ out of $- y^{2}$ .

$x' = \frac{y x}{y (- y)}$

Step 5.3.3.3.2.2

Cancel the common factor.

$x' = \frac{y x}{y (- y)}$

Step 5.3.3.3.2.3

Rewrite the expression.

$x' = \frac{x}{- y}$

Step 5.3.3.4

Move the negative in front of the fraction.

$x' = - \frac{x}{y}$

Step 6

Replace $x'$ with $\frac{d x}{d y}$ .

$\frac{d x}{d y} = - \frac{x}{y}$