3x(2x-8)=30

Solution for 3x(2x-8)=30 equation:

Simplifying
3x(2x + -8) = 30

Reorder the terms:
3x(-8 + 2x) = 30
(-8 * 3x + 2x * 3x) = 30
(-24x + 6x2) = 30

Solving
-24x + 6x2 = 30

Solving for variable 'x'.

Reorder the terms:
-30 + -24x + 6x2 = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + -24x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(-5 + -4x + x2) = 0

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

Ignore the factor 6.
Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve:

Simplifying
-1 + -1x = 0

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

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

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

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

Simplifying
x = -1
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}