4(x-5)(2x+3)=0

Solution for 4(x-5)(2x+3)=0 equation:

Simplifying
4(x + -5)(2x + 3) = 0

Reorder the terms:
4(-5 + x)(2x + 3) = 0

Reorder the terms:
4(-5 + x)(3 + 2x) = 0

Multiply (-5 + x) * (3 + 2x)
4(-5(3 + 2x) + x(3 + 2x)) = 0
4((3 * -5 + 2x * -5) + x(3 + 2x)) = 0
4((-15 + -10x) + x(3 + 2x)) = 0
4(-15 + -10x + (3 * x + 2x * x)) = 0
4(-15 + -10x + (3x + 2x2)) = 0

Combine like terms: -10x + 3x = -7x
4(-15 + -7x + 2x2) = 0
(-15 * 4 + -7x * 4 + 2x2 * 4) = 0
(-60 + -28x + 8x2) = 0

Solving
-60 + -28x + 8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(-15 + -7x + 2x2) = 0

Factor a trinomial.
4((-3 + -2x)(5 + -1x)) = 0

Ignore the factor 4.
Subproblem 1
Set the factor '(-3 + -2x)' equal to zero and attempt to solve:

Simplifying
-3 + -2x = 0

Solving
-3 + -2x = 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 + -2x = 0 + 3

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

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

Divide each side by '-2'.
x = -1.5

Simplifying
x = -1.5
Subproblem 2
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
Solution
x = {-1.5, 5}