2x^2-x=12+x

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


Simplifying
2x2 + -1x = 12 + x

Reorder the terms:
-1x + 2x2 = 12 + x

Solving
-1x + 2x2 = 12 + x

Solving for variable 'x'.

Reorder the terms:
-12 + -1x + -1x + 2x2 = 12 + x + -12 + -1x

Combine like terms: -1x + -1x = -2x
-12 + -2x + 2x2 = 12 + x + -12 + -1x

Reorder the terms:
-12 + -2x + 2x2 = 12 + -12 + x + -1x

Combine like terms: 12 + -12 = 0
-12 + -2x + 2x2 = 0 + x + -1x
-12 + -2x + 2x2 = x + -1x

Combine like terms: x + -1x = 0
-12 + -2x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-6 + -1x + x2) = 0

Factor a trinomial.
2((-2 + -1x)(3 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-2, 3}

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