(2x-4)*(3x+15)=0

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Solution for (2x-4)*(3x+15)=0 equation: 


Simplifying
(2x + -4)(3x + 15) = 0

Reorder the terms:
(-4 + 2x)(3x + 15) = 0

Reorder the terms:
(-4 + 2x)(15 + 3x) = 0

Multiply (-4 + 2x) * (15 + 3x)
(-4(15 + 3x) + 2x * (15 + 3x)) = 0
((15 * -4 + 3x * -4) + 2x * (15 + 3x)) = 0
((-60 + -12x) + 2x * (15 + 3x)) = 0
(-60 + -12x + (15 * 2x + 3x * 2x)) = 0
(-60 + -12x + (30x + 6x2)) = 0

Combine like terms: -12x + 30x = 18x
(-60 + 18x + 6x2) = 0

Solving
-60 + 18x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6'.
6(-10 + 3x + x2) = 0

Factor a trinomial.
6((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 6.

Subproblem 1
Set the factor '(-5 + -1x)' equal to zero and attempt to solve:

Simplifying
-5 + -1x = 0

Solving
-5 + -1x = 0

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

Add '5' to each side of the equation.
-5 + 5 + -1x = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -1x = 0 + 5
-1x = 0 + 5

Combine like terms: 0 + 5 = 5
-1x = 5

Divide each side by '-1'.
x = -5

Simplifying
x = -5

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 = {-5, 2}

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