(x^2+17x-64)=0

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Solution for (x^2+17x-64)=0 equation:


Simplifying
(x2 + 17x + -64) = 0

Reorder the terms:
(-64 + 17x + x2) = 0

Remove parenthesis around (-64 + 17x + x2)
-64 + 17x + x2 = 0

Solving
-64 + 17x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 17x + 64 + x2 = 0 + 64

Reorder the terms:
-64 + 64 + 17x + x2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 17x + x2 = 0 + 64
17x + x2 = 0 + 64

Combine like terms: 0 + 64 = 64
17x + x2 = 64

The x term is 17x.  Take half its coefficient (8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
17x + 72.25 + x2 = 64 + 72.25

Reorder the terms:
72.25 + 17x + x2 = 64 + 72.25

Combine like terms: 64 + 72.25 = 136.25
72.25 + 17x + x2 = 136.25

Factor a perfect square on the left side:
(x + 8.5)(x + 8.5) = 136.25

Calculate the square root of the right side: 11.67261753

Break this problem into two subproblems by setting 
(x + 8.5) equal to 11.67261753 and -11.67261753.

Subproblem 1

x + 8.5 = 11.67261753 Simplifying x + 8.5 = 11.67261753 Reorder the terms: 8.5 + x = 11.67261753 Solving 8.5 + x = 11.67261753 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = 11.67261753 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = 11.67261753 + -8.5 x = 11.67261753 + -8.5 Combine like terms: 11.67261753 + -8.5 = 3.17261753 x = 3.17261753 Simplifying x = 3.17261753

Subproblem 2

x + 8.5 = -11.67261753 Simplifying x + 8.5 = -11.67261753 Reorder the terms: 8.5 + x = -11.67261753 Solving 8.5 + x = -11.67261753 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = -11.67261753 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = -11.67261753 + -8.5 x = -11.67261753 + -8.5 Combine like terms: -11.67261753 + -8.5 = -20.17261753 x = -20.17261753 Simplifying x = -20.17261753

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.17261753, -20.17261753}

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