x^2+6x-88=0

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Solution for x^2+6x-88=0 equation:


Simplifying
x2 + 6x + -88 = 0

Reorder the terms:
-88 + 6x + x2 = 0

Solving
-88 + 6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '88' to each side of the equation.
-88 + 6x + 88 + x2 = 0 + 88

Reorder the terms:
-88 + 88 + 6x + x2 = 0 + 88

Combine like terms: -88 + 88 = 0
0 + 6x + x2 = 0 + 88
6x + x2 = 0 + 88

Combine like terms: 0 + 88 = 88
6x + x2 = 88

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 88 + 9

Reorder the terms:
9 + 6x + x2 = 88 + 9

Combine like terms: 88 + 9 = 97
9 + 6x + x2 = 97

Factor a perfect square on the left side:
(x + 3)(x + 3) = 97

Calculate the square root of the right side: 9.848857802

Break this problem into two subproblems by setting 
(x + 3) equal to 9.848857802 and -9.848857802.

Subproblem 1

x + 3 = 9.848857802 Simplifying x + 3 = 9.848857802 Reorder the terms: 3 + x = 9.848857802 Solving 3 + x = 9.848857802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 9.848857802 + -3 Combine like terms: 3 + -3 = 0 0 + x = 9.848857802 + -3 x = 9.848857802 + -3 Combine like terms: 9.848857802 + -3 = 6.848857802 x = 6.848857802 Simplifying x = 6.848857802

Subproblem 2

x + 3 = -9.848857802 Simplifying x + 3 = -9.848857802 Reorder the terms: 3 + x = -9.848857802 Solving 3 + x = -9.848857802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -9.848857802 + -3 Combine like terms: 3 + -3 = 0 0 + x = -9.848857802 + -3 x = -9.848857802 + -3 Combine like terms: -9.848857802 + -3 = -12.848857802 x = -12.848857802 Simplifying x = -12.848857802

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.848857802, -12.848857802}

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