3(x+2)(x-8)=0

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Solution for 3(x+2)(x-8)=0 equation: 


Simplifying
3(x + 2)(x + -8) = 0

Reorder the terms:
3(2 + x)(x + -8) = 0

Reorder the terms:
3(2 + x)(-8 + x) = 0

Multiply (2 + x) * (-8 + x)
3(2(-8 + x) + x(-8 + x)) = 0
3((-8 * 2 + x * 2) + x(-8 + x)) = 0
3((-16 + 2x) + x(-8 + x)) = 0
3(-16 + 2x + (-8 * x + x * x)) = 0
3(-16 + 2x + (-8x + x2)) = 0

Combine like terms: 2x + -8x = -6x
3(-16 + -6x + x2) = 0
(-16 * 3 + -6x * 3 + x2 * 3) = 0
(-48 + -18x + 3x2) = 0

Solving
-48 + -18x + 3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-16 + -6x + x2) = 0

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

Ignore the factor 3.

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 + -1x)' equal to zero and attempt to solve:

Simplifying
8 + -1x = 0

Solving
8 + -1x = 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 + -1x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1x = 0 + -8
-1x = 0 + -8

Combine like terms: 0 + -8 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8
Solution
x = {-2, 8}

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