(x-9)(x-8)=0

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Solution for (x-9)(x-8)=0 equation:


Simplifying
(x + -9)(x + -8) = 0

Reorder the terms:
(-9 + x)(x + -8) = 0

Reorder the terms:
(-9 + x)(-8 + x) = 0

Multiply (-9 + x) * (-8 + x)
(-9(-8 + x) + x(-8 + x)) = 0
((-8 * -9 + x * -9) + x(-8 + x)) = 0
((72 + -9x) + x(-8 + x)) = 0
(72 + -9x + (-8 * x + x * x)) = 0
(72 + -9x + (-8x + x2)) = 0

Combine like terms: -9x + -8x = -17x
(72 + -17x + x2) = 0

Solving
72 + -17x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(8 + -1x)(9 + -1x) = 0

Subproblem 1

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

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 = {8, 9}

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