2x^2=30x-72

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Solution for 2x^2=30x-72 equation:


Simplifying
2x2 = 30x + -72

Reorder the terms:
2x2 = -72 + 30x

Solving
2x2 = -72 + 30x

Solving for variable 'x'.

Reorder the terms:
72 + -30x + 2x2 = -72 + 30x + 72 + -30x

Reorder the terms:
72 + -30x + 2x2 = -72 + 72 + 30x + -30x

Combine like terms: -72 + 72 = 0
72 + -30x + 2x2 = 0 + 30x + -30x
72 + -30x + 2x2 = 30x + -30x

Combine like terms: 30x + -30x = 0
72 + -30x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(36 + -15x + x2) = 0

Factor a trinomial.
2((3 + -1x)(12 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 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 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 2

Set the factor '(12 + -1x)' equal to zero and attempt to solve: Simplifying 12 + -1x = 0 Solving 12 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -1x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -1x = 0 + -12 -1x = 0 + -12 Combine like terms: 0 + -12 = -12 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12

Solution

x = {3, 12}

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