(n-8)(n-9)=

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Solution for (n-8)(n-9)= equation:


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

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

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

Multiply (-8 + n) * (-9 + n)
(-8(-9 + n) + n(-9 + n)) = 0
((-9 * -8 + n * -8) + n(-9 + n)) = 0
((72 + -8n) + n(-9 + n)) = 0
(72 + -8n + (-9 * n + n * n)) = 0
(72 + -8n + (-9n + n2)) = 0

Combine like terms: -8n + -9n = -17n
(72 + -17n + n2) = 0

Solving
72 + -17n + n2 = 0

Solving for variable 'n'.

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

Subproblem 1

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

Subproblem 2

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

Solution

n = {8, 9}

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