(x-13)(x+11)=

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Solution for (x-13)(x+11)= equation:


Simplifying
(x + -13)(x + 11) = 0

Reorder the terms:
(-13 + x)(x + 11) = 0

Reorder the terms:
(-13 + x)(11 + x) = 0

Multiply (-13 + x) * (11 + x)
(-13(11 + x) + x(11 + x)) = 0
((11 * -13 + x * -13) + x(11 + x)) = 0
((-143 + -13x) + x(11 + x)) = 0
(-143 + -13x + (11 * x + x * x)) = 0
(-143 + -13x + (11x + x2)) = 0

Combine like terms: -13x + 11x = -2x
(-143 + -2x + x2) = 0

Solving
-143 + -2x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-11 + -1x)(13 + -1x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(13 + -1x)' equal to zero and attempt to solve: Simplifying 13 + -1x = 0 Solving 13 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + -1x = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -1x = 0 + -13 -1x = 0 + -13 Combine like terms: 0 + -13 = -13 -1x = -13 Divide each side by '-1'. x = 13 Simplifying x = 13

Solution

x = {-11, 13}

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