5x^2+12x=4x^2-36

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Solution for 5x^2+12x=4x^2-36 equation:


Simplifying
5x2 + 12x = 4x2 + -36

Reorder the terms:
12x + 5x2 = 4x2 + -36

Reorder the terms:
12x + 5x2 = -36 + 4x2

Solving
12x + 5x2 = -36 + 4x2

Solving for variable 'x'.

Reorder the terms:
36 + 12x + 5x2 + -4x2 = -36 + 4x2 + 36 + -4x2

Combine like terms: 5x2 + -4x2 = 1x2
36 + 12x + 1x2 = -36 + 4x2 + 36 + -4x2

Reorder the terms:
36 + 12x + 1x2 = -36 + 36 + 4x2 + -4x2

Combine like terms: -36 + 36 = 0
36 + 12x + 1x2 = 0 + 4x2 + -4x2
36 + 12x + 1x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
36 + 12x + 1x2 = 0

Factor a trinomial.
(6 + x)(6 + x) = 0

Subproblem 1

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Subproblem 2

Set the factor '(6 + x)' equal to zero and attempt to solve: Simplifying 6 + x = 0 Solving 6 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + x = 0 + -6 x = 0 + -6 Combine like terms: 0 + -6 = -6 x = -6 Simplifying x = -6

Solution

x = {-6, -6}

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