Calculus Examples

$x y^{3} + x^{2} y^{2} + 3 x^{2} - 6 = 1$

Step 1

Differentiate both sides of the equation.

$\frac{d}{d x} (x y^{3} + x^{2} y^{2} + 3 x^{2} - 6) = \frac{d}{d x} (1)$

Step 2

Differentiate the left side of the equation.

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Step 2.1

By the Sum Rule, the derivative of $x y^{3} + x^{2} y^{2} + 3 x^{2} - 6$ with respect to $x$ is $\frac{d}{d x} [x y^{3}] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$ .

$\frac{d}{d x} [x y^{3}] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2

Evaluate $\frac{d}{d x} [x y^{3}]$ .

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Step 2.2.1

Differentiate using the Product Rule which states that $\frac{d}{d x} [f (x) g (x)]$ is $f (x) \frac{d}{d x} [g (x)] + g (x) \frac{d}{d x} [f (x)]$ where $f (x) = x$ and $g (x) = y^{3}$ .

$x \frac{d}{d x} [y^{3}] + y^{3} \frac{d}{d x} [x] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.2

Differentiate using the chain rule, which states that $\frac{d}{d x} [f (g (x))]$ is $f' (g (x)) g' (x)$ where $f (x) = x^{3}$ and $g (x) = y$ .

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Step 2.2.2.1

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

$x (\frac{d}{d u_{1}} [{u_{1}}^{3}] \frac{d}{d x} [y]) + y^{3} \frac{d}{d x} [x] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.2.2

Differentiate using the Power Rule which states that $\frac{d}{d u_{1}} [{u_{1}}^{n}]$ is $n {u_{1}}^{n - 1}$ where $n = 3$ .

$x (3 {u_{1}}^{2} \frac{d}{d x} [y]) + y^{3} \frac{d}{d x} [x] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.2.3

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

$x (3 y^{2} \frac{d}{d x} [y]) + y^{3} \frac{d}{d x} [x] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.3

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

$x (3 y^{2} y') + y^{3} \frac{d}{d x} [x] + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.4

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

$x (3 y^{2} y') + y^{3} \cdot 1 + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.5

Move $3$ to the left of $x$ .

$3 \cdot x y^{2} y' + y^{3} \cdot 1 + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.2.6

Multiply $y^{3}$ by $1$ .

$3 x y^{2} y' + y^{3} + \frac{d}{d x} [x^{2} y^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3

Evaluate $\frac{d}{d x} [x^{2} y^{2}]$ .

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Step 2.3.1

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

$3 x y^{2} y' + y^{3} + x^{2} \frac{d}{d x} [y^{2}] + y^{2} \frac{d}{d x} [x^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.2

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

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Step 2.3.2.1

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

$3 x y^{2} y' + y^{3} + x^{2} (\frac{d}{d u_{2}} [{u_{2}}^{2}] \frac{d}{d x} [y]) + y^{2} \frac{d}{d x} [x^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.2.2

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

$3 x y^{2} y' + y^{3} + x^{2} (2 u_{2} \frac{d}{d x} [y]) + y^{2} \frac{d}{d x} [x^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.2.3

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

$3 x y^{2} y' + y^{3} + x^{2} (2 y \frac{d}{d x} [y]) + y^{2} \frac{d}{d x} [x^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.3

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

$3 x y^{2} y' + y^{3} + x^{2} (2 y y') + y^{2} \frac{d}{d x} [x^{2}] + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.4

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

$3 x y^{2} y' + y^{3} + x^{2} (2 y y') + y^{2} (2 x) + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.5

Move $2$ to the left of $x^{2}$ .

$3 x y^{2} y' + y^{3} + 2 \cdot x^{2} y y' + y^{2} (2 x) + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.3.6

Move $2$ to the left of $y^{2}$ .

$3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + \frac{d}{d x} [3 x^{2}] + \frac{d}{d x} [- 6]$

Step 2.4

Evaluate $\frac{d}{d x} [3 x^{2}]$ .

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Step 2.4.1

Since $3$ is constant with respect to $x$ , the derivative of $3 x^{2}$ with respect to $x$ is $3 \frac{d}{d x} [x^{2}]$ .

$3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + 3 \frac{d}{d x} [x^{2}] + \frac{d}{d x} [- 6]$

Step 2.4.2

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

$3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + 3 (2 x) + \frac{d}{d x} [- 6]$

Step 2.4.3

Multiply $2$ by $3$ .

$3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + 6 x + \frac{d}{d x} [- 6]$

Step 2.5

Since $- 6$ is constant with respect to $x$ , the derivative of $- 6$ with respect to $x$ is $0$ .

$3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + 6 x + 0$

Step 2.6

Simplify.

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Step 2.6.1

Add $3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + 6 x$ and $0$ .

$3 x y^{2} y' + y^{3} + 2 x^{2} y y' + 2 y^{2} x + 6 x$

Step 2.6.2

Reorder terms.

$y^{3} + 3 y^{2} x y' + 2 x^{2} y y' + 2 y^{2} x + 6 x$

Step 3

Since $1$ is constant with respect to $x$ , the derivative of $1$ with respect to $x$ is $0$ .

$0$

Step 4

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

$y^{3} + 3 y^{2} x y' + 2 x^{2} y y' + 2 y^{2} x + 6 x = 0$

Step 5

Solve for $y'$ .

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Step 5.1

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

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Step 5.1.1

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

$3 y^{2} x y' + 2 x^{2} y y' + 2 y^{2} x + 6 x = - y^{3}$

Step 5.1.2

Subtract $2 y^{2} x$ from both sides of the equation.

$3 y^{2} x y' + 2 x^{2} y y' + 6 x = - y^{3} - 2 y^{2} x$

Step 5.1.3

Subtract $6 x$ from both sides of the equation.

$3 y^{2} x y' + 2 x^{2} y y' = - y^{3} - 2 y^{2} x - 6 x$

Step 5.2

Factor $y x y'$ out of $3 y^{2} x y' + 2 x^{2} y y'$ .

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Step 5.2.1

Factor $y x y'$ out of $3 y^{2} x y'$ .

$y x y' (3 y) + 2 x^{2} y y' = - y^{3} - 2 y^{2} x - 6 x$

Step 5.2.2

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

$y x y' (3 y) + y x y' (2 x) = - y^{3} - 2 y^{2} x - 6 x$

Step 5.2.3

Factor $y x y'$ out of $y x y' (3 y) + y x y' (2 x)$ .

$y x y' (3 y + 2 x) = - y^{3} - 2 y^{2} x - 6 x$

Step 5.3

Divide each term in $y x y' (3 y + 2 x) = - y^{3} - 2 y^{2} x - 6 x$ by $y x (3 y + 2 x)$ and simplify.

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Step 5.3.1

Divide each term in $y x y' (3 y + 2 x) = - y^{3} - 2 y^{2} x - 6 x$ by $y x (3 y + 2 x)$ .

$\frac{y x y' (3 y + 2 x)}{y x (3 y + 2 x)} = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.2

Simplify the left side.

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Step 5.3.2.1

Cancel the common factor of $y$ .

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Step 5.3.2.1.1

Cancel the common factor.

$\frac{y x y' (3 y + 2 x)}{y x (3 y + 2 x)} = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.2.1.2

Rewrite the expression.

$\frac{x y' (3 y + 2 x)}{x (3 y + 2 x)} = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

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.

$\frac{x y' (3 y + 2 x)}{x (3 y + 2 x)} = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.2.2.2

Rewrite the expression.

$\frac{y' (3 y + 2 x)}{3 y + 2 x} = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.2.3

Cancel the common factor of $3 y + 2 x$ .

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Step 5.3.2.3.1

Cancel the common factor.

$\frac{y' (3 y + 2 x)}{3 y + 2 x} = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.2.3.2

Divide $y'$ by $1$ .

$y' = \frac{- y^{3}}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3

Simplify the right side.

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Step 5.3.3.1

Simplify each term.

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Step 5.3.3.1.1

Cancel the common factor of $y^{3}$ and $y$ .

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Step 5.3.3.1.1.1

Factor $y$ out of $- y^{3}$ .

$y' = \frac{y (- y^{2})}{y x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.1.2

Cancel the common factors.

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Step 5.3.3.1.1.2.1

Factor $y$ out of $y x (3 y + 2 x)$ .

$y' = \frac{y (- y^{2})}{y (x (3 y + 2 x))} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.1.2.2

Cancel the common factor.

$y' = \frac{y (- y^{2})}{y (x (3 y + 2 x))} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.1.2.3

Rewrite the expression.

$y' = \frac{- y^{2}}{x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.2

Move the negative in front of the fraction.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{- 2 y^{2} x}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.3

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

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Step 5.3.3.1.3.1

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

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{y (- 2 y x)}{y x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.3.2

Cancel the common factors.

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Step 5.3.3.1.3.2.1

Factor $y$ out of $y x (3 y + 2 x)$ .

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{y (- 2 y x)}{y (x (3 y + 2 x))} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.3.2.2

Cancel the common factor.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{y (- 2 y x)}{y (x (3 y + 2 x))} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.3.2.3

Rewrite the expression.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{- 2 y x}{x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.4

Cancel the common factor of $x$ .

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Step 5.3.3.1.4.1

Cancel the common factor.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{- 2 y x}{x (3 y + 2 x)} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.4.2

Rewrite the expression.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} + \frac{- 2 y}{3 y + 2 x} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.5

Move the negative in front of the fraction.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{(2) y}{3 y + 2 x} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.6

Cancel the common factor of $x$ .

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Step 5.3.3.1.6.1

Cancel the common factor.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{2 y}{3 y + 2 x} + \frac{- 6 x}{y x (3 y + 2 x)}$

Step 5.3.3.1.6.2

Rewrite the expression.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{2 y}{3 y + 2 x} + \frac{- 6}{y (3 y + 2 x)}$

Step 5.3.3.1.7

Move the negative in front of the fraction.

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{2 y}{3 y + 2 x} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.2

To write $- \frac{2 y}{3 y + 2 x}$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{2 y}{3 y + 2 x} \cdot \frac{x}{x} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.3

Write each expression with a common denominator of $x (3 y + 2 x)$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.3.1

Multiply $\frac{2 y}{3 y + 2 x}$ by $\frac{x}{x}$ .

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{2 y x}{(3 y + 2 x) x} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.3.2

Reorder the factors of $(3 y + 2 x) x$ .

$y' = - \frac{y^{2}}{x (3 y + 2 x)} - \frac{2 y x}{x (3 y + 2 x)} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.4

Combine the numerators over the common denominator.

$y' = \frac{- y^{2} - 2 y x}{x (3 y + 2 x)} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.5

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

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Step 5.3.3.5.1

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

$y' = \frac{y (- y) - 2 y x}{x (3 y + 2 x)} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.5.2

Factor $y$ out of $- 2 y x$ .

$y' = \frac{y (- y) + y (- 2 x)}{x (3 y + 2 x)} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.5.3

Factor $y$ out of $y (- y) + y (- 2 x)$ .

$y' = \frac{y (- y - 2 x)}{x (3 y + 2 x)} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.6

To write $\frac{y (- y - 2 x)}{x (3 y + 2 x)}$ as a fraction with a common denominator, multiply by $\frac{y}{y}$ .

$y' = \frac{y (- y - 2 x)}{x (3 y + 2 x)} \cdot \frac{y}{y} - \frac{6}{y (3 y + 2 x)}$

Step 5.3.3.7

To write $- \frac{6}{y (3 y + 2 x)}$ as a fraction with a common denominator, multiply by $\frac{x}{x}$ .

$y' = \frac{y (- y - 2 x)}{x (3 y + 2 x)} \cdot \frac{y}{y} - \frac{6}{y (3 y + 2 x)} \cdot \frac{x}{x}$

Step 5.3.3.8

Write each expression with a common denominator of $x (3 y + 2 x) y$ , by multiplying each by an appropriate factor of $1$ .

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Step 5.3.3.8.1

Multiply $\frac{y (- y - 2 x)}{x (3 y + 2 x)}$ by $\frac{y}{y}$ .

$y' = \frac{y (- y - 2 x) y}{x (3 y + 2 x) y} - \frac{6}{y (3 y + 2 x)} \cdot \frac{x}{x}$

Step 5.3.3.8.2

Multiply $\frac{6}{y (3 y + 2 x)}$ by $\frac{x}{x}$ .

$y' = \frac{y (- y - 2 x) y}{x (3 y + 2 x) y} - \frac{6 x}{y (3 y + 2 x) x}$

Step 5.3.3.8.3

Reorder the factors of $x (3 y + 2 x) y$ .

$y' = \frac{y (- y - 2 x) y}{x y (3 y + 2 x)} - \frac{6 x}{y (3 y + 2 x) x}$

Step 5.3.3.8.4

Reorder the factors of $y (3 y + 2 x) x$ .

$y' = \frac{y (- y - 2 x) y}{x y (3 y + 2 x)} - \frac{6 x}{x y (3 y + 2 x)}$

Step 5.3.3.9

Combine the numerators over the common denominator.

$y' = \frac{y (- y - 2 x) y - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10

Simplify the numerator.

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Step 5.3.3.10.1

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

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Step 5.3.3.10.1.1

Move $y$ .

$y' = \frac{y \cdot y (- y - 2 x) - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.1.2

Multiply $y$ by $y$ .

$y' = \frac{y^{2} (- y - 2 x) - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.2

Apply the distributive property.

$y' = \frac{y^{2} (- y) + y^{2} (- 2 x) - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.3

Rewrite using the commutative property of multiplication.

$y' = \frac{- y^{2} y + y^{2} (- 2 x) - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.4

Rewrite using the commutative property of multiplication.

$y' = \frac{- y^{2} y - 2 y^{2} x - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.5

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

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Step 5.3.3.10.5.1

Move $y$ .

$y' = \frac{- (y \cdot y^{2}) - 2 y^{2} x - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.5.2

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

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Step 5.3.3.10.5.2.1

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

$y' = \frac{- (y^{1} y^{2}) - 2 y^{2} x - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.5.2.2

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

$y' = \frac{- y^{1 + 2} - 2 y^{2} x - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.10.5.3

Add $1$ and $2$ .

$y' = \frac{- y^{3} - 2 y^{2} x - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.11

Simplify with factoring out.

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Step 5.3.3.11.1

Factor $- 1$ out of $- y^{3}$ .

$y' = \frac{- (y^{3}) - 2 y^{2} x - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.11.2

Factor $- 1$ out of $- 2 y^{2} x$ .

$y' = \frac{- (y^{3}) - (2 y^{2} x) - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.11.3

Factor $- 1$ out of $- (y^{3}) - (2 y^{2} x)$ .

$y' = \frac{- (y^{3} + 2 y^{2} x) - 6 x}{x y (3 y + 2 x)}$

Step 5.3.3.11.4

Factor $- 1$ out of $- 6 x$ .

$y' = \frac{- (y^{3} + 2 y^{2} x) - (6 x)}{x y (3 y + 2 x)}$

Step 5.3.3.11.5

Factor $- 1$ out of $- (y^{3} + 2 y^{2} x) - (6 x)$ .

$y' = \frac{- (y^{3} + 2 y^{2} x + 6 x)}{x y (3 y + 2 x)}$

Step 5.3.3.11.6

Simplify the expression.

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Step 5.3.3.11.6.1

Rewrite $- (y^{3} + 2 y^{2} x + 6 x)$ as $- 1 (y^{3} + 2 y^{2} x + 6 x)$ .

$y' = \frac{- 1 (y^{3} + 2 y^{2} x + 6 x)}{x y (3 y + 2 x)}$

Step 5.3.3.11.6.2

Move the negative in front of the fraction.

$y' = - \frac{y^{3} + 2 y^{2} x + 6 x}{x y (3 y + 2 x)}$

Step 6

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

$\frac{d y}{d x} = - \frac{y^{3} + 2 y^{2} x + 6 x}{x y (3 y + 2 x)}$

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