x(x+9)=162

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Solution for x(x+9)=162 equation:


Simplifying
x(x + 9) = 162

Reorder the terms:
x(9 + x) = 162
(9 * x + x * x) = 162
(9x + x2) = 162

Solving
9x + x2 = 162

Solving for variable 'x'.

Reorder the terms:
-162 + 9x + x2 = 162 + -162

Combine like terms: 162 + -162 = 0
-162 + 9x + x2 = 0

Factor a trinomial.
(-18 + -1x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-18 + -1x)' equal to zero and attempt to solve: Simplifying -18 + -1x = 0 Solving -18 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + -1x = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -1x = 0 + 18 -1x = 0 + 18 Combine like terms: 0 + 18 = 18 -1x = 18 Divide each side by '-1'. x = -18 Simplifying x = -18

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 = {-18, 9}

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