x^2-12x=336

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Solution for x^2-12x=336 equation:


Simplifying
x2 + -12x = 336

Reorder the terms:
-12x + x2 = 336

Solving
-12x + x2 = 336

Solving for variable 'x'.

Reorder the terms:
-336 + -12x + x2 = 336 + -336

Combine like terms: 336 + -336 = 0
-336 + -12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '336' to each side of the equation.
-336 + -12x + 336 + x2 = 0 + 336

Reorder the terms:
-336 + 336 + -12x + x2 = 0 + 336

Combine like terms: -336 + 336 = 0
0 + -12x + x2 = 0 + 336
-12x + x2 = 0 + 336

Combine like terms: 0 + 336 = 336
-12x + x2 = 336

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 = 336 + 36

Reorder the terms:
36 + -12x + x2 = 336 + 36

Combine like terms: 336 + 36 = 372
36 + -12x + x2 = 372

Factor a perfect square on the left side:
(x + -6)(x + -6) = 372

Calculate the square root of the right side: 19.287301522

Break this problem into two subproblems by setting 
(x + -6) equal to 19.287301522 and -19.287301522.

Subproblem 1

x + -6 = 19.287301522 Simplifying x + -6 = 19.287301522 Reorder the terms: -6 + x = 19.287301522 Solving -6 + x = 19.287301522 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 = 19.287301522 + 6 Combine like terms: -6 + 6 = 0 0 + x = 19.287301522 + 6 x = 19.287301522 + 6 Combine like terms: 19.287301522 + 6 = 25.287301522 x = 25.287301522 Simplifying x = 25.287301522

Subproblem 2

x + -6 = -19.287301522 Simplifying x + -6 = -19.287301522 Reorder the terms: -6 + x = -19.287301522 Solving -6 + x = -19.287301522 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 = -19.287301522 + 6 Combine like terms: -6 + 6 = 0 0 + x = -19.287301522 + 6 x = -19.287301522 + 6 Combine like terms: -19.287301522 + 6 = -13.287301522 x = -13.287301522 Simplifying x = -13.287301522

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.287301522, -13.287301522}

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