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

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


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

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 = -9x
-9x + x2 + 2x2 = 12x + -2x2 + -12x + 2x2

Combine like terms: x2 + 2x2 = 3x2
-9x + 3x2 = 12x + -2x2 + -12x + 2x2

Reorder the terms:
-9x + 3x2 = 12x + -12x + -2x2 + 2x2

Combine like terms: 12x + -12x = 0
-9x + 3x2 = 0 + -2x2 + 2x2
-9x + 3x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
-9x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-3 + x) = 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 '(-3 + x)' equal to zero and attempt to solve: Simplifying -3 + x = 0 Solving -3 + x = 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 + x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0 + 3 x = 0 + 3 Combine like terms: 0 + 3 = 3 x = 3 Simplifying x = 3

Solution

x = {0, 3}

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