x(15+x)=216

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Solution for x(15+x)=216 equation:


Simplifying
x(15 + x) = 216
(15 * x + x * x) = 216
(15x + x2) = 216

Solving
15x + x2 = 216

Solving for variable 'x'.

Reorder the terms:
-216 + 15x + x2 = 216 + -216

Combine like terms: 216 + -216 = 0
-216 + 15x + x2 = 0

Factor a trinomial.
(-24 + -1x)(9 + -1x) = 0

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 '(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 = {-24, 9}

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