x^2+3x=2x^2-12x

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Solution for x^2+3x=2x^2-12x equation:


Simplifying
x2 + 3x = 2x2 + -12x

Reorder the terms:
3x + x2 = 2x2 + -12x

Reorder the terms:
3x + x2 = -12x + 2x2

Solving
3x + x2 = -12x + 2x2

Solving for variable 'x'.

Reorder the terms:
3x + 12x + x2 + -2x2 = -12x + 2x2 + 12x + -2x2

Combine like terms: 3x + 12x = 15x
15x + x2 + -2x2 = -12x + 2x2 + 12x + -2x2

Combine like terms: x2 + -2x2 = -1x2
15x + -1x2 = -12x + 2x2 + 12x + -2x2

Reorder the terms:
15x + -1x2 = -12x + 12x + 2x2 + -2x2

Combine like terms: -12x + 12x = 0
15x + -1x2 = 0 + 2x2 + -2x2
15x + -1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
15x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(15 + -1x) = 0

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 '(15 + -1x)' equal to zero and attempt to solve: Simplifying 15 + -1x = 0 Solving 15 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1x = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1x = 0 + -15 -1x = 0 + -15 Combine like terms: 0 + -15 = -15 -1x = -15 Divide each side by '-1'. x = 15 Simplifying x = 15

Solution

x = {0, 15}

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