13x+7x^2=5x^2-15x

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Solution for 13x+7x^2=5x^2-15x equation:


Simplifying
13x + 7x2 = 5x2 + -15x

Reorder the terms:
13x + 7x2 = -15x + 5x2

Solving
13x + 7x2 = -15x + 5x2

Solving for variable 'x'.

Reorder the terms:
13x + 15x + 7x2 + -5x2 = -15x + 5x2 + 15x + -5x2

Combine like terms: 13x + 15x = 28x
28x + 7x2 + -5x2 = -15x + 5x2 + 15x + -5x2

Combine like terms: 7x2 + -5x2 = 2x2
28x + 2x2 = -15x + 5x2 + 15x + -5x2

Reorder the terms:
28x + 2x2 = -15x + 15x + 5x2 + -5x2

Combine like terms: -15x + 15x = 0
28x + 2x2 = 0 + 5x2 + -5x2
28x + 2x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
28x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2x'.
2x(14 + 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 '(14 + x)' equal to zero and attempt to solve: Simplifying 14 + x = 0 Solving 14 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 0 + -14 Combine like terms: 14 + -14 = 0 0 + x = 0 + -14 x = 0 + -14 Combine like terms: 0 + -14 = -14 x = -14 Simplifying x = -14

Solution

x = {0, -14}

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