5x^2+5x=15+15x

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Solution for 5x^2+5x=15+15x equation: 


Simplifying
5x2 + 5x = 15 + 15x

Reorder the terms:
5x + 5x2 = 15 + 15x

Solving
5x + 5x2 = 15 + 15x

Solving for variable 'x'.

Reorder the terms:
-15 + 5x + -15x + 5x2 = 15 + 15x + -15 + -15x

Combine like terms: 5x + -15x = -10x
-15 + -10x + 5x2 = 15 + 15x + -15 + -15x

Reorder the terms:
-15 + -10x + 5x2 = 15 + -15 + 15x + -15x

Combine like terms: 15 + -15 = 0
-15 + -10x + 5x2 = 0 + 15x + -15x
-15 + -10x + 5x2 = 15x + -15x

Combine like terms: 15x + -15x = 0
-15 + -10x + 5x2 = 0

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

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

Ignore the factor 5.

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 '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 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 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {-1, 3}

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