(3x-4)(x+2)=8

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Solution for (3x-4)(x+2)=8 equation: 


Simplifying
(3x + -4)(x + 2) = 8

Reorder the terms:
(-4 + 3x)(x + 2) = 8

Reorder the terms:
(-4 + 3x)(2 + x) = 8

Multiply (-4 + 3x) * (2 + x)
(-4(2 + x) + 3x * (2 + x)) = 8
((2 * -4 + x * -4) + 3x * (2 + x)) = 8
((-8 + -4x) + 3x * (2 + x)) = 8
(-8 + -4x + (2 * 3x + x * 3x)) = 8
(-8 + -4x + (6x + 3x2)) = 8

Combine like terms: -4x + 6x = 2x
(-8 + 2x + 3x2) = 8

Solving
-8 + 2x + 3x2 = 8

Solving for variable 'x'.

Reorder the terms:
-8 + -8 + 2x + 3x2 = 8 + -8

Combine like terms: -8 + -8 = -16
-16 + 2x + 3x2 = 8 + -8

Combine like terms: 8 + -8 = 0
-16 + 2x + 3x2 = 0

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


Subproblem 1
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

Subproblem 2
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
Solution
x = {-2.666666667, 2}

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