928=-2x^2+120x-800

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Solution for 928=-2x^2+120x-800 equation:


Simplifying
928 = -2x2 + 120x + -800

Reorder the terms:
928 = -800 + 120x + -2x2

Solving
928 = -800 + 120x + -2x2

Solving for variable 'x'.

Combine like terms: 928 + 800 = 1728
1728 + -120x + 2x2 = -800 + 120x + -2x2 + 800 + -120x + 2x2

Reorder the terms:
1728 + -120x + 2x2 = -800 + 800 + 120x + -120x + -2x2 + 2x2

Combine like terms: -800 + 800 = 0
1728 + -120x + 2x2 = 0 + 120x + -120x + -2x2 + 2x2
1728 + -120x + 2x2 = 120x + -120x + -2x2 + 2x2

Combine like terms: 120x + -120x = 0
1728 + -120x + 2x2 = 0 + -2x2 + 2x2
1728 + -120x + 2x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
1728 + -120x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(864 + -60x + x2) = 0

Factor a trinomial.
2((24 + -1x)(36 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(24 + -1x)' equal to zero and attempt to solve: Simplifying 24 + -1x = 0 Solving 24 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + -1x = 0 + -24 Combine like terms: 24 + -24 = 0 0 + -1x = 0 + -24 -1x = 0 + -24 Combine like terms: 0 + -24 = -24 -1x = -24 Divide each side by '-1'. x = 24 Simplifying x = 24

Subproblem 2

Set the factor '(36 + -1x)' equal to zero and attempt to solve: Simplifying 36 + -1x = 0 Solving 36 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-36' to each side of the equation. 36 + -36 + -1x = 0 + -36 Combine like terms: 36 + -36 = 0 0 + -1x = 0 + -36 -1x = 0 + -36 Combine like terms: 0 + -36 = -36 -1x = -36 Divide each side by '-1'. x = 36 Simplifying x = 36

Solution

x = {24, 36}

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