Precalculus Examples

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

Step 1

Solve for $y$ .

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Step 1.1

Use the quadratic formula to find the solutions.

$\frac{- b \pm \sqrt{b^{2} - 4 (a c)}}{2 a}$

Step 1.2

Substitute the values $a = 1$ , $b = 2 x - 1$ , and $c = x^{2} + x - 4$ into the quadratic formula and solve for $y$ .

$\frac{- (2 x - 1) \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot (1 \cdot (x^{2} + x - 4))}}{2 \cdot 1}$

Step 1.3

Simplify.

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Step 1.3.1

Simplify the numerator.

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Step 1.3.1.1

Apply the distributive property.

$y = \frac{- (2 x) + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.2

Multiply $2$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.3

Multiply $- 1$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.4

Rewrite ${(2 x - 1)}^{2}$ as $(2 x - 1) (2 x - 1)$ .

$y = \frac{- 2 x + 1 \pm \sqrt{(2 x - 1) (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.5

Expand $(2 x - 1) (2 x - 1)$ using the FOIL Method.

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Step 1.3.1.5.1

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x - 1) - 1 (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.5.2

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x) + 2 x \cdot - 1 - 1 (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.5.3

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6

Simplify and combine like terms.

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Step 1.3.1.6.1

Simplify each term.

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Step 1.3.1.6.1.1

Rewrite using the commutative property of multiplication.

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 x \cdot x) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.1.2

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

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Step 1.3.1.6.1.2.1

Move $x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 (x \cdot x)) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.1.2.2

Multiply $x$ by $x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 x^{2}) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.1.3

Multiply $2$ by $2$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.1.4

Multiply $- 1$ by $2$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.1.5

Multiply $2$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 2 x - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.1.6

Multiply $- 1$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 2 x + 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.6.2

Subtract $2 x$ from $- 2 x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.7

Multiply $- 4$ by $1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.3.1.8

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 x^{2} - 4 x - 4 \cdot - 4}}{2 \cdot 1}$

Step 1.3.1.9

Multiply $- 4$ by $- 4$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 x^{2} - 4 x + 16}}{2 \cdot 1}$

Step 1.3.1.10

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

$y = \frac{- 2 x + 1 \pm \sqrt{- 4 x + 1 + 0 - 4 x + 16}}{2 \cdot 1}$

Step 1.3.1.11

Add $- 4 x$ and $0$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 4 x + 1 - 4 x + 16}}{2 \cdot 1}$

Step 1.3.1.12

Subtract $4 x$ from $- 4 x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 1 + 16}}{2 \cdot 1}$

Step 1.3.1.13

Add $1$ and $16$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 17}}{2 \cdot 1}$

Step 1.3.2

Multiply $2$ by $1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 17}}{2}$

Step 1.4

Simplify the expression to solve for the $+$ portion of the $\pm$ .

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Step 1.4.1

Simplify the numerator.

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Step 1.4.1.1

Apply the distributive property.

$y = \frac{- (2 x) + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.2

Multiply $2$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.3

Multiply $- 1$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.4

Rewrite ${(2 x - 1)}^{2}$ as $(2 x - 1) (2 x - 1)$ .

$y = \frac{- 2 x + 1 \pm \sqrt{(2 x - 1) (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.5

Expand $(2 x - 1) (2 x - 1)$ using the FOIL Method.

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Step 1.4.1.5.1

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x - 1) - 1 (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.5.2

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x) + 2 x \cdot - 1 - 1 (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.5.3

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6

Simplify and combine like terms.

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Step 1.4.1.6.1

Simplify each term.

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Step 1.4.1.6.1.1

Rewrite using the commutative property of multiplication.

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 x \cdot x) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.1.2

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

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Step 1.4.1.6.1.2.1

Move $x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 (x \cdot x)) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.1.2.2

Multiply $x$ by $x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 x^{2}) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.1.3

Multiply $2$ by $2$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.1.4

Multiply $- 1$ by $2$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.1.5

Multiply $2$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 2 x - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.1.6

Multiply $- 1$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 2 x + 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.6.2

Subtract $2 x$ from $- 2 x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.7

Multiply $- 4$ by $1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.4.1.8

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 x^{2} - 4 x - 4 \cdot - 4}}{2 \cdot 1}$

Step 1.4.1.9

Multiply $- 4$ by $- 4$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 x^{2} - 4 x + 16}}{2 \cdot 1}$

Step 1.4.1.10

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

$y = \frac{- 2 x + 1 \pm \sqrt{- 4 x + 1 + 0 - 4 x + 16}}{2 \cdot 1}$

Step 1.4.1.11

Add $- 4 x$ and $0$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 4 x + 1 - 4 x + 16}}{2 \cdot 1}$

Step 1.4.1.12

Subtract $4 x$ from $- 4 x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 1 + 16}}{2 \cdot 1}$

Step 1.4.1.13

Add $1$ and $16$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 17}}{2 \cdot 1}$

Step 1.4.2

Multiply $2$ by $1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 17}}{2}$

Step 1.4.3

Change the $\pm$ to $+$ .

$y = \frac{- 2 x + 1 + \sqrt{- 8 x + 17}}{2}$

Step 1.4.4

Factor $- 1$ out of $- 2 x$ .

$y = \frac{- (2 x) + 1 + \sqrt{- 8 x + 17}}{2}$

Step 1.4.5

Rewrite $1$ as $- 1 (- 1)$ .

$y = \frac{- (2 x) - 1 \cdot - 1 + \sqrt{- 8 x + 17}}{2}$

Step 1.4.6

Factor $- 1$ out of $- (2 x) - 1 (- 1)$ .

$y = \frac{- (2 x - 1) + \sqrt{- 8 x + 17}}{2}$

Step 1.4.7

Factor $- 1$ out of $\sqrt{- 8 x + 17}$ .

$y = \frac{- (2 x - 1) - 1 (- \sqrt{- 8 x + 17})}{2}$

Step 1.4.8

Factor $- 1$ out of $- (2 x - 1) - 1 (- \sqrt{- 8 x + 17})$ .

$y = \frac{- (2 x - 1 - \sqrt{- 8 x + 17})}{2}$

Step 1.4.9

Rewrite $- (2 x - 1 - \sqrt{- 8 x + 17})$ as $- 1 (2 x - 1 - \sqrt{- 8 x + 17})$ .

$y = \frac{- 1 (2 x - 1 - \sqrt{- 8 x + 17})}{2}$

Step 1.4.10

Move the negative in front of the fraction.

$y = - \frac{2 x - 1 - \sqrt{- 8 x + 17}}{2}$

Step 1.5

Simplify the expression to solve for the $-$ portion of the $\pm$ .

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Step 1.5.1

Simplify the numerator.

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Step 1.5.1.1

Apply the distributive property.

$y = \frac{- (2 x) + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.2

Multiply $2$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.3

Multiply $- 1$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{{(2 x - 1)}^{2} - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.4

Rewrite ${(2 x - 1)}^{2}$ as $(2 x - 1) (2 x - 1)$ .

$y = \frac{- 2 x + 1 \pm \sqrt{(2 x - 1) (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.5

Expand $(2 x - 1) (2 x - 1)$ using the FOIL Method.

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Step 1.5.1.5.1

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x - 1) - 1 (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.5.2

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x) + 2 x \cdot - 1 - 1 (2 x - 1) - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.5.3

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{2 x (2 x) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6

Simplify and combine like terms.

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Step 1.5.1.6.1

Simplify each term.

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Step 1.5.1.6.1.1

Rewrite using the commutative property of multiplication.

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 x \cdot x) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.1.2

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

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Step 1.5.1.6.1.2.1

Move $x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 (x \cdot x)) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.1.2.2

Multiply $x$ by $x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{2 \cdot (2 x^{2}) + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.1.3

Multiply $2$ by $2$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} + 2 x \cdot - 1 - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.1.4

Multiply $- 1$ by $2$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 1 (2 x) - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.1.5

Multiply $2$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 2 x - 1 \cdot - 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.1.6

Multiply $- 1$ by $- 1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 2 x - 2 x + 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.6.2

Subtract $2 x$ from $- 2 x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 \cdot 1 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.7

Multiply $- 4$ by $1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 \cdot (x^{2} + x - 4)}}{2 \cdot 1}$

Step 1.5.1.8

Apply the distributive property.

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 x^{2} - 4 x - 4 \cdot - 4}}{2 \cdot 1}$

Step 1.5.1.9

Multiply $- 4$ by $- 4$ .

$y = \frac{- 2 x + 1 \pm \sqrt{4 x^{2} - 4 x + 1 - 4 x^{2} - 4 x + 16}}{2 \cdot 1}$

Step 1.5.1.10

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

$y = \frac{- 2 x + 1 \pm \sqrt{- 4 x + 1 + 0 - 4 x + 16}}{2 \cdot 1}$

Step 1.5.1.11

Add $- 4 x$ and $0$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 4 x + 1 - 4 x + 16}}{2 \cdot 1}$

Step 1.5.1.12

Subtract $4 x$ from $- 4 x$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 1 + 16}}{2 \cdot 1}$

Step 1.5.1.13

Add $1$ and $16$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 17}}{2 \cdot 1}$

Step 1.5.2

Multiply $2$ by $1$ .

$y = \frac{- 2 x + 1 \pm \sqrt{- 8 x + 17}}{2}$

Step 1.5.3

Change the $\pm$ to $-$ .

$y = \frac{- 2 x + 1 - \sqrt{- 8 x + 17}}{2}$

Step 1.5.4

Factor $- 1$ out of $- 2 x$ .

$y = \frac{- (2 x) + 1 - \sqrt{- 8 x + 17}}{2}$

Step 1.5.5

Rewrite $1$ as $- 1 (- 1)$ .

$y = \frac{- (2 x) - 1 \cdot - 1 - \sqrt{- 8 x + 17}}{2}$

Step 1.5.6

Factor $- 1$ out of $- (2 x) - 1 (- 1)$ .

$y = \frac{- (2 x - 1) - \sqrt{- 8 x + 17}}{2}$

Step 1.5.7

Factor $- 1$ out of $- \sqrt{- 8 x + 17}$ .

$y = \frac{- (2 x - 1) - (\sqrt{- 8 x + 17})}{2}$

Step 1.5.8

Factor $- 1$ out of $- (2 x - 1) - (\sqrt{- 8 x + 17})$ .

$y = \frac{- (2 x - 1 + \sqrt{- 8 x + 17})}{2}$

Step 1.5.9

Rewrite $- (2 x - 1 + \sqrt{- 8 x + 17})$ as $- 1 (2 x - 1 + \sqrt{- 8 x + 17})$ .

$y = \frac{- 1 (2 x - 1 + \sqrt{- 8 x + 17})}{2}$

Step 1.5.10

Move the negative in front of the fraction.

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 1.6

The final answer is the combination of both solutions.

$y = - \frac{2 x - 1 - \sqrt{- 8 x + 17}}{2}$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

$y = - \frac{2 x - 1 - \sqrt{- 8 x + 17}}{2}$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 2

To write a polynomial in standard form, simplify and then arrange the terms in descending order.

$y = a x^{2} + b x + c$

Step 3

Split the fraction $\frac{2 x - 1 - \sqrt{- 8 x + 17}}{2}$ into two fractions.

$y = - (\frac{2 x - 1}{2} + \frac{- \sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 4

Simplify each term.

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Step 4.1

Split the fraction $\frac{2 x - 1}{2}$ into two fractions.

$y = - (\frac{2 x}{2} + \frac{- 1}{2} + \frac{- \sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 4.2

Simplify each term.

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Step 4.2.1

Cancel the common factor of $2$ .

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Step 4.2.1.1

Cancel the common factor.

$y = - (\frac{2 x}{2} + \frac{- 1}{2} + \frac{- \sqrt{- 8 x + 17}}{2}), - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 4.2.1.2

Divide $x$ by $1$ .

$y = - (x + \frac{- 1}{2} + \frac{- \sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

$y = - (x + \frac{- 1}{2} + \frac{- \sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 4.2.2

Move the negative in front of the fraction.

$y = - (x - \frac{1}{2} + \frac{- \sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

$y = - (x - \frac{1}{2} + \frac{- \sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 4.3

Move the negative in front of the fraction.

$y = - (x - \frac{1}{2} - \frac{\sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

$y = - (x - \frac{1}{2} - \frac{\sqrt{- 8 x + 17}}{2})$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 5

Apply the distributive property.

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - \frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$

Step 6

Split the fraction $\frac{2 x - 1 + \sqrt{- 8 x + 17}}{2}$ into two fractions.

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (\frac{2 x - 1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

Step 7

Simplify each term.

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Step 7.1

Split the fraction $\frac{2 x - 1}{2}$ into two fractions.

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (\frac{2 x}{2} + \frac{- 1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

Step 7.2

Simplify each term.

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Step 7.2.1

Cancel the common factor of $2$ .

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Step 7.2.1.1

Cancel the common factor.

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}, - (\frac{2 x}{2} + \frac{- 1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

Step 7.2.1.2

Divide $x$ by $1$ .

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (x + \frac{- 1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (x + \frac{- 1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

Step 7.2.2

Move the negative in front of the fraction.

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (x - \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (x - \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - (x - \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2})$

Step 8

Apply the distributive property.

$y = - x + \frac{1}{2} + \frac{\sqrt{- 8 x + 17}}{2}$

$y = - x + \frac{1}{2} - \frac{\sqrt{- 8 x + 17}}{2}$

Step 9

Reorder terms.

$y = - x + \frac{1}{2} + \frac{1}{2} \cdot \sqrt{- 8 x + 17}$

$y = - x + \frac{1}{2} - (\frac{1}{2} \cdot \sqrt{- 8 x + 17})$

Step 10

Remove parentheses.

$y = - x + \frac{1}{2} + \frac{1}{2} \cdot \sqrt{- 8 x + 17}$

$y = - x + \frac{1}{2} - \frac{1}{2} \cdot \sqrt{- 8 x + 17}$

Step 11