3x(2x+5)+6x=

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Solution for 3x(2x+5)+6x= equation: 


Simplifying
3x(2x + 5) + 6x = 0

Reorder the terms:
3x(5 + 2x) + 6x = 0
(5 * 3x + 2x * 3x) + 6x = 0
(15x + 6x2) + 6x = 0

Reorder the terms:
15x + 6x + 6x2 = 0

Combine like terms: 15x + 6x = 21x
21x + 6x2 = 0

Solving
21x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3x'.
3x(7 + 2x) = 0

Ignore the factor 3.

Subproblem 1
Set the factor 'x' equal to zero and attempt to solve:

Simplifying
x = 0

Solving
x = 0

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

Simplifying
x = 0

Subproblem 2
Set the factor '(7 + 2x)' equal to zero and attempt to solve:

Simplifying
7 + 2x = 0

Solving
7 + 2x = 0

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

Add '-7' to each side of the equation.
7 + -7 + 2x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 0 + -7
2x = 0 + -7

Combine like terms: 0 + -7 = -7
2x = -7

Divide each side by '2'.
x = -3.5

Simplifying
x = -3.5
Solution
x = {0, -3.5}

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