x^2+8x-968=0

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Solution for x^2+8x-968=0 equation:


Simplifying
x2 + 8x + -968 = 0

Reorder the terms:
-968 + 8x + x2 = 0

Solving
-968 + 8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '968' to each side of the equation.
-968 + 8x + 968 + x2 = 0 + 968

Reorder the terms:
-968 + 968 + 8x + x2 = 0 + 968

Combine like terms: -968 + 968 = 0
0 + 8x + x2 = 0 + 968
8x + x2 = 0 + 968

Combine like terms: 0 + 968 = 968
8x + x2 = 968

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 = 968 + 16

Reorder the terms:
16 + 8x + x2 = 968 + 16

Combine like terms: 968 + 16 = 984
16 + 8x + x2 = 984

Factor a perfect square on the left side:
(x + 4)(x + 4) = 984

Calculate the square root of the right side: 31.368774283

Break this problem into two subproblems by setting 
(x + 4) equal to 31.368774283 and -31.368774283.

Subproblem 1

x + 4 = 31.368774283 Simplifying x + 4 = 31.368774283 Reorder the terms: 4 + x = 31.368774283 Solving 4 + x = 31.368774283 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 = 31.368774283 + -4 Combine like terms: 4 + -4 = 0 0 + x = 31.368774283 + -4 x = 31.368774283 + -4 Combine like terms: 31.368774283 + -4 = 27.368774283 x = 27.368774283 Simplifying x = 27.368774283

Subproblem 2

x + 4 = -31.368774283 Simplifying x + 4 = -31.368774283 Reorder the terms: 4 + x = -31.368774283 Solving 4 + x = -31.368774283 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 = -31.368774283 + -4 Combine like terms: 4 + -4 = 0 0 + x = -31.368774283 + -4 x = -31.368774283 + -4 Combine like terms: -31.368774283 + -4 = -35.368774283 x = -35.368774283 Simplifying x = -35.368774283

Solution

The solution to the problem is based on the solutions from the subproblems. x = {27.368774283, -35.368774283}

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