x(2x-28)=-90

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Solution for x(2x-28)=-90 equation:


Simplifying
x(2x + -28) = -90

Reorder the terms:
x(-28 + 2x) = -90
(-28 * x + 2x * x) = -90
(-28x + 2x2) = -90

Solving
-28x + 2x2 = -90

Solving for variable 'x'.

Reorder the terms:
90 + -28x + 2x2 = -90 + 90

Combine like terms: -90 + 90 = 0
90 + -28x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(45 + -14x + x2) = 0

Factor a trinomial.
2((5 + -1x)(9 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {5, 9}

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