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

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


Simplifying
3x2 + x = x2 + -3x

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

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

Solving
x + 3x2 = -3x + x2

Solving for variable 'x'.

Reorder the terms:
x + 3x + 3x2 + -1x2 = -3x + x2 + 3x + -1x2

Combine like terms: x + 3x = 4x
4x + 3x2 + -1x2 = -3x + x2 + 3x + -1x2

Combine like terms: 3x2 + -1x2 = 2x2
4x + 2x2 = -3x + x2 + 3x + -1x2

Reorder the terms:
4x + 2x2 = -3x + 3x + x2 + -1x2

Combine like terms: -3x + 3x = 0
4x + 2x2 = 0 + x2 + -1x2
4x + 2x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4x + 2x2 = 0

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

Ignore the factor 2.

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 '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Solution

x = {0, -2}

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