3x^2-30x=-72

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Solution for 3x^2-30x=-72 equation:


Simplifying
3x2 + -30x = -72

Reorder the terms:
-30x + 3x2 = -72

Solving
-30x + 3x2 = -72

Solving for variable 'x'.

Reorder the terms:
72 + -30x + 3x2 = -72 + 72

Combine like terms: -72 + 72 = 0
72 + -30x + 3x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(24 + -10x + x2) = 0

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

Ignore the factor 3.

Subproblem 1

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Subproblem 2

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

Solution

x = {4, 6}

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