108=x(x+3)

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Solution for 108=x(x+3) equation:


Simplifying
108 = x(x + 3)

Reorder the terms:
108 = x(3 + x)
108 = (3 * x + x * x)
108 = (3x + x2)

Solving
108 = 3x + x2

Solving for variable 'x'.

Reorder the terms:
108 + -3x + -1x2 = 3x + -3x + x2 + -1x2

Combine like terms: 3x + -3x = 0
108 + -3x + -1x2 = 0 + x2 + -1x2
108 + -3x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
108 + -3x + -1x2 = 0

Factor a trinomial.
(9 + -1x)(12 + x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(12 + x)' equal to zero and attempt to solve: Simplifying 12 + x = 0 Solving 12 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + x = 0 + -12 x = 0 + -12 Combine like terms: 0 + -12 = -12 x = -12 Simplifying x = -12

Solution

x = {9, -12}

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