0=x^2-4x-117

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Solution for 0=x^2-4x-117 equation:


Simplifying
0 = x2 + -4x + -117

Reorder the terms:
0 = -117 + -4x + x2

Solving
0 = -117 + -4x + x2

Solving for variable 'x'.

Combine like terms: 0 + 117 = 117
117 + 4x + -1x2 = -117 + -4x + x2 + 117 + 4x + -1x2

Reorder the terms:
117 + 4x + -1x2 = -117 + 117 + -4x + 4x + x2 + -1x2

Combine like terms: -117 + 117 = 0
117 + 4x + -1x2 = 0 + -4x + 4x + x2 + -1x2
117 + 4x + -1x2 = -4x + 4x + x2 + -1x2

Combine like terms: -4x + 4x = 0
117 + 4x + -1x2 = 0 + x2 + -1x2
117 + 4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
117 + 4x + -1x2 = 0

Factor a trinomial.
(13 + -1x)(9 + x) = 0

Subproblem 1

Set the factor '(13 + -1x)' equal to zero and attempt to solve: Simplifying 13 + -1x = 0 Solving 13 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + -1x = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1x = 0 + -13 -1x = 0 + -13 Combine like terms: 0 + -13 = -13 -1x = -13 Divide each side by '-1'. x = 13 Simplifying x = 13

Subproblem 2

Set the factor '(9 + x)' equal to zero and attempt to solve: Simplifying 9 + x = 0 Solving 9 + x = 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 + x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x = 0 + -9 x = 0 + -9 Combine like terms: 0 + -9 = -9 x = -9 Simplifying x = -9

Solution

x = {13, -9}

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