(11x-9)(1x+9)=

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Solution for (11x-9)(1x+9)= equation:


Simplifying
(11x + -9)(1x + 9) = 0

Reorder the terms:
(-9 + 11x)(1x + 9) = 0

Reorder the terms:
(-9 + 11x)(9 + 1x) = 0

Multiply (-9 + 11x) * (9 + 1x)
(-9(9 + 1x) + 11x * (9 + 1x)) = 0
((9 * -9 + 1x * -9) + 11x * (9 + 1x)) = 0
((-81 + -9x) + 11x * (9 + 1x)) = 0
(-81 + -9x + (9 * 11x + 1x * 11x)) = 0
(-81 + -9x + (99x + 11x2)) = 0

Combine like terms: -9x + 99x = 90x
(-81 + 90x + 11x2) = 0

Solving
-81 + 90x + 11x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -1x)(9 + -11x) = 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 '(9 + -11x)' equal to zero and attempt to solve: Simplifying 9 + -11x = 0 Solving 9 + -11x = 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 + -11x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -11x = 0 + -9 -11x = 0 + -9 Combine like terms: 0 + -9 = -9 -11x = -9 Divide each side by '-11'. x = 0.8181818182 Simplifying x = 0.8181818182

Solution

x = {-9, 0.8181818182}

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