2*x^2-2*x=120*119

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Solution for 2*x^2-2*x=120*119 equation:


Simplifying
2x2 + -2x = 120 * 119

Reorder the terms:
-2x + 2x2 = 120 * 119

Multiply 120 * 119
-2x + 2x2 = 14280

Solving
-2x + 2x2 = 14280

Solving for variable 'x'.

Reorder the terms:
-14280 + -2x + 2x2 = 14280 + -14280

Combine like terms: 14280 + -14280 = 0
-14280 + -2x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-7140 + -1x + x2) = 0

Factor a trinomial.
2((-84 + -1x)(85 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-84 + -1x)' equal to zero and attempt to solve: Simplifying -84 + -1x = 0 Solving -84 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '84' to each side of the equation. -84 + 84 + -1x = 0 + 84 Combine like terms: -84 + 84 = 0 0 + -1x = 0 + 84 -1x = 0 + 84 Combine like terms: 0 + 84 = 84 -1x = 84 Divide each side by '-1'. x = -84 Simplifying x = -84

Subproblem 2

Set the factor '(85 + -1x)' equal to zero and attempt to solve: Simplifying 85 + -1x = 0 Solving 85 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-85' to each side of the equation. 85 + -85 + -1x = 0 + -85 Combine like terms: 85 + -85 = 0 0 + -1x = 0 + -85 -1x = 0 + -85 Combine like terms: 0 + -85 = -85 -1x = -85 Divide each side by '-1'. x = 85 Simplifying x = 85

Solution

x = {-84, 85}

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