x(x-2)=99

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Solution for x(x-2)=99 equation:


Simplifying
x(x + -2) = 99

Reorder the terms:
x(-2 + x) = 99
(-2 * x + x * x) = 99
(-2x + x2) = 99

Solving
-2x + x2 = 99

Solving for variable 'x'.

Reorder the terms:
-99 + -2x + x2 = 99 + -99

Combine like terms: 99 + -99 = 0
-99 + -2x + x2 = 0

Factor a trinomial.
(-9 + -1x)(11 + -1x) = 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 '(11 + -1x)' equal to zero and attempt to solve: Simplifying 11 + -1x = 0 Solving 11 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -1x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1x = 0 + -11 -1x = 0 + -11 Combine like terms: 0 + -11 = -11 -1x = -11 Divide each side by '-1'. x = 11 Simplifying x = 11

Solution

x = {-9, 11}

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