(x+4)(x)=117

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Solution for (x+4)(x)=117 equation:


Simplifying
(x + 4)(x) = 117

Reorder the terms:
(4 + x)(x) = 117

Reorder the terms for easier multiplication:
x(4 + x) = 117
(4 * x + x * x) = 117
(4x + x2) = 117

Solving
4x + x2 = 117

Solving for variable 'x'.

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

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

Factor a trinomial.
(-13 + -1x)(9 + -1x) = 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 + -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 = {-13, 9}

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