3x^2-12=2x+4

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Solution for 3x^2-12=2x+4 equation: 


Simplifying
3x2 + -12 = 2x + 4

Reorder the terms:
-12 + 3x2 = 2x + 4

Reorder the terms:
-12 + 3x2 = 4 + 2x

Solving
-12 + 3x2 = 4 + 2x

Solving for variable 'x'.

Reorder the terms:
-12 + -4 + -2x + 3x2 = 4 + 2x + -4 + -2x

Combine like terms: -12 + -4 = -16
-16 + -2x + 3x2 = 4 + 2x + -4 + -2x

Reorder the terms:
-16 + -2x + 3x2 = 4 + -4 + 2x + -2x

Combine like terms: 4 + -4 = 0
-16 + -2x + 3x2 = 0 + 2x + -2x
-16 + -2x + 3x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
-16 + -2x + 3x2 = 0

Factor a trinomial.
(-2 + -1x)(8 + -3x) = 0


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 '(8 + -3x)' equal to zero and attempt to solve:

Simplifying
8 + -3x = 0

Solving
8 + -3x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-8' to each side of the equation.
8 + -8 + -3x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -3x = 0 + -8
-3x = 0 + -8

Combine like terms: 0 + -8 = -8
-3x = -8

Divide each side by '-3'.
x = 2.666666667

Simplifying
x = 2.666666667
Solution
x = {-2, 2.666666667}

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