x^2+7x-152=0

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Solution for x^2+7x-152=0 equation:


Simplifying
x2 + 7x + -152 = 0

Reorder the terms:
-152 + 7x + x2 = 0

Solving
-152 + 7x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '152' to each side of the equation.
-152 + 7x + 152 + x2 = 0 + 152

Reorder the terms:
-152 + 152 + 7x + x2 = 0 + 152

Combine like terms: -152 + 152 = 0
0 + 7x + x2 = 0 + 152
7x + x2 = 0 + 152

Combine like terms: 0 + 152 = 152
7x + x2 = 152

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = 152 + 12.25

Reorder the terms:
12.25 + 7x + x2 = 152 + 12.25

Combine like terms: 152 + 12.25 = 164.25
12.25 + 7x + x2 = 164.25

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 164.25

Calculate the square root of the right side: 12.816005618

Break this problem into two subproblems by setting 
(x + 3.5) equal to 12.816005618 and -12.816005618.

Subproblem 1

x + 3.5 = 12.816005618 Simplifying x + 3.5 = 12.816005618 Reorder the terms: 3.5 + x = 12.816005618 Solving 3.5 + x = 12.816005618 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 12.816005618 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 12.816005618 + -3.5 x = 12.816005618 + -3.5 Combine like terms: 12.816005618 + -3.5 = 9.316005618 x = 9.316005618 Simplifying x = 9.316005618

Subproblem 2

x + 3.5 = -12.816005618 Simplifying x + 3.5 = -12.816005618 Reorder the terms: 3.5 + x = -12.816005618 Solving 3.5 + x = -12.816005618 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -12.816005618 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -12.816005618 + -3.5 x = -12.816005618 + -3.5 Combine like terms: -12.816005618 + -3.5 = -16.316005618 x = -16.316005618 Simplifying x = -16.316005618

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.316005618, -16.316005618}

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