12x+72=4x^2

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Solution for 12x+72=4x^2 equation:


Simplifying
12x + 72 = 4x2

Reorder the terms:
72 + 12x = 4x2

Solving
72 + 12x = 4x2

Solving for variable 'x'.

Combine like terms: 4x2 + -4x2 = 0
72 + 12x + -4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(18 + 3x + -1x2) = 0

Factor a trinomial.
4((6 + -1x)(3 + x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 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 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

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 = {6, -3}

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