x^2+8x=7600

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Solution for x^2+8x=7600 equation:


Simplifying
x2 + 8x = 7600

Reorder the terms:
8x + x2 = 7600

Solving
8x + x2 = 7600

Solving for variable 'x'.

Reorder the terms:
-7600 + 8x + x2 = 7600 + -7600

Combine like terms: 7600 + -7600 = 0
-7600 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7600' to each side of the equation.
-7600 + 8x + 7600 + x2 = 0 + 7600

Reorder the terms:
-7600 + 7600 + 8x + x2 = 0 + 7600

Combine like terms: -7600 + 7600 = 0
0 + 8x + x2 = 0 + 7600
8x + x2 = 0 + 7600

Combine like terms: 0 + 7600 = 7600
8x + x2 = 7600

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 7600 + 16

Reorder the terms:
16 + 8x + x2 = 7600 + 16

Combine like terms: 7600 + 16 = 7616
16 + 8x + x2 = 7616

Factor a perfect square on the left side:
(x + 4)(x + 4) = 7616

Calculate the square root of the right side: 87.269696917

Break this problem into two subproblems by setting 
(x + 4) equal to 87.269696917 and -87.269696917.

Subproblem 1

x + 4 = 87.269696917 Simplifying x + 4 = 87.269696917 Reorder the terms: 4 + x = 87.269696917 Solving 4 + x = 87.269696917 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 87.269696917 + -4 Combine like terms: 4 + -4 = 0 0 + x = 87.269696917 + -4 x = 87.269696917 + -4 Combine like terms: 87.269696917 + -4 = 83.269696917 x = 83.269696917 Simplifying x = 83.269696917

Subproblem 2

x + 4 = -87.269696917 Simplifying x + 4 = -87.269696917 Reorder the terms: 4 + x = -87.269696917 Solving 4 + x = -87.269696917 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -87.269696917 + -4 Combine like terms: 4 + -4 = 0 0 + x = -87.269696917 + -4 x = -87.269696917 + -4 Combine like terms: -87.269696917 + -4 = -91.269696917 x = -91.269696917 Simplifying x = -91.269696917

Solution

The solution to the problem is based on the solutions from the subproblems. x = {83.269696917, -91.269696917}

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