3(x+5)(2x-1)=

Solution for 3(x+5)(2x-1)= equation:

Simplifying
3(x + 5)(2x + -1) = 0

Reorder the terms:
3(5 + x)(2x + -1) = 0

Reorder the terms:
3(5 + x)(-1 + 2x) = 0

Multiply (5 + x) * (-1 + 2x)
3(5(-1 + 2x) + x(-1 + 2x)) = 0
3((-1 * 5 + 2x * 5) + x(-1 + 2x)) = 0
3((-5 + 10x) + x(-1 + 2x)) = 0
3(-5 + 10x + (-1 * x + 2x * x)) = 0
3(-5 + 10x + (-1x + 2x2)) = 0

Combine like terms: 10x + -1x = 9x
3(-5 + 9x + 2x2) = 0
(-5 * 3 + 9x * 3 + 2x2 * 3) = 0
(-15 + 27x + 6x2) = 0

Solving
-15 + 27x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-5 + 9x + 2x2) = 0

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

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

Simplifying
1 + -2x = 0

Solving
1 + -2x = 0

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

Add '-1' to each side of the equation.
1 + -1 + -2x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2x = 0 + -1
-2x = 0 + -1

Combine like terms: 0 + -1 = -1
-2x = -1

Divide each side by '-2'.
x = 0.5

Simplifying
x = 0.5
Solution
x = {-5, 0.5}