x^2-12x=676

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Solution for x^2-12x=676 equation:


Simplifying
x2 + -12x = 676

Reorder the terms:
-12x + x2 = 676

Solving
-12x + x2 = 676

Solving for variable 'x'.

Reorder the terms:
-676 + -12x + x2 = 676 + -676

Combine like terms: 676 + -676 = 0
-676 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '676' to each side of the equation.
-676 + -12x + 676 + x2 = 0 + 676

Reorder the terms:
-676 + 676 + -12x + x2 = 0 + 676

Combine like terms: -676 + 676 = 0
0 + -12x + x2 = 0 + 676
-12x + x2 = 0 + 676

Combine like terms: 0 + 676 = 676
-12x + x2 = 676

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = 676 + 36

Reorder the terms:
36 + -12x + x2 = 676 + 36

Combine like terms: 676 + 36 = 712
36 + -12x + x2 = 712

Factor a perfect square on the left side:
(x + -6)(x + -6) = 712

Calculate the square root of the right side: 26.683328128

Break this problem into two subproblems by setting 
(x + -6) equal to 26.683328128 and -26.683328128.

Subproblem 1

x + -6 = 26.683328128 Simplifying x + -6 = 26.683328128 Reorder the terms: -6 + x = 26.683328128 Solving -6 + x = 26.683328128 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 26.683328128 + 6 Combine like terms: -6 + 6 = 0 0 + x = 26.683328128 + 6 x = 26.683328128 + 6 Combine like terms: 26.683328128 + 6 = 32.683328128 x = 32.683328128 Simplifying x = 32.683328128

Subproblem 2

x + -6 = -26.683328128 Simplifying x + -6 = -26.683328128 Reorder the terms: -6 + x = -26.683328128 Solving -6 + x = -26.683328128 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -26.683328128 + 6 Combine like terms: -6 + 6 = 0 0 + x = -26.683328128 + 6 x = -26.683328128 + 6 Combine like terms: -26.683328128 + 6 = -20.683328128 x = -20.683328128 Simplifying x = -20.683328128

Solution

The solution to the problem is based on the solutions from the subproblems. x = {32.683328128, -20.683328128}

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