3x^2+13x=2x^2-8x

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Solution for 3x^2+13x=2x^2-8x equation:


Simplifying
3x2 + 13x = 2x2 + -8x

Reorder the terms:
13x + 3x2 = 2x2 + -8x

Reorder the terms:
13x + 3x2 = -8x + 2x2

Solving
13x + 3x2 = -8x + 2x2

Solving for variable 'x'.

Reorder the terms:
13x + 8x + 3x2 + -2x2 = -8x + 2x2 + 8x + -2x2

Combine like terms: 13x + 8x = 21x
21x + 3x2 + -2x2 = -8x + 2x2 + 8x + -2x2

Combine like terms: 3x2 + -2x2 = 1x2
21x + 1x2 = -8x + 2x2 + 8x + -2x2

Reorder the terms:
21x + 1x2 = -8x + 8x + 2x2 + -2x2

Combine like terms: -8x + 8x = 0
21x + 1x2 = 0 + 2x2 + -2x2
21x + 1x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
21x + 1x2 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(21 + x) = 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 '(21 + x)' equal to zero and attempt to solve: Simplifying 21 + x = 0 Solving 21 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + x = 0 + -21 Combine like terms: 21 + -21 = 0 0 + x = 0 + -21 x = 0 + -21 Combine like terms: 0 + -21 = -21 x = -21 Simplifying x = -21

Solution

x = {0, -21}

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