2X^2+6X=X^2-X-12

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Solution for 2X^2+6X=X^2-X-12 equation:


Simplifying
2X2 + 6X = X2 + -1X + -12

Reorder the terms:
6X + 2X2 = X2 + -1X + -12

Reorder the terms:
6X + 2X2 = -12 + -1X + X2

Solving
6X + 2X2 = -12 + -1X + X2

Solving for variable 'X'.

Reorder the terms:
12 + 6X + X + 2X2 + -1X2 = -12 + -1X + X2 + 12 + X + -1X2

Combine like terms: 6X + X = 7X
12 + 7X + 2X2 + -1X2 = -12 + -1X + X2 + 12 + X + -1X2

Combine like terms: 2X2 + -1X2 = 1X2
12 + 7X + 1X2 = -12 + -1X + X2 + 12 + X + -1X2

Reorder the terms:
12 + 7X + 1X2 = -12 + 12 + -1X + X + X2 + -1X2

Combine like terms: -12 + 12 = 0
12 + 7X + 1X2 = 0 + -1X + X + X2 + -1X2
12 + 7X + 1X2 = -1X + X + X2 + -1X2

Combine like terms: -1X + X = 0
12 + 7X + 1X2 = 0 + X2 + -1X2
12 + 7X + 1X2 = X2 + -1X2

Combine like terms: X2 + -1X2 = 0
12 + 7X + 1X2 = 0

Factor a trinomial.
(4 + X)(3 + X) = 0

Subproblem 1

Set the factor '(4 + X)' equal to zero and attempt to solve: Simplifying 4 + X = 0 Solving 4 + X = 0 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 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + X = 0 + -4 X = 0 + -4 Combine like terms: 0 + -4 = -4 X = -4 Simplifying X = -4

Subproblem 2

Set the factor '(3 + X)' equal to zero and attempt to solve: Simplifying 3 + X = 0 Solving 3 + X = 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 + X = 0 + -3 Combine like terms: 3 + -3 = 0 0 + X = 0 + -3 X = 0 + -3 Combine like terms: 0 + -3 = -3 X = -3 Simplifying X = -3

Solution

X = {-4, -3}

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