(n-8)(n-8)=169

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Solution for (n-8)(n-8)=169 equation:


Simplifying
(n + -8)(n + -8) = 169

Reorder the terms:
(-8 + n)(n + -8) = 169

Reorder the terms:
(-8 + n)(-8 + n) = 169

Multiply (-8 + n) * (-8 + n)
(-8(-8 + n) + n(-8 + n)) = 169
((-8 * -8 + n * -8) + n(-8 + n)) = 169
((64 + -8n) + n(-8 + n)) = 169
(64 + -8n + (-8 * n + n * n)) = 169
(64 + -8n + (-8n + n2)) = 169

Combine like terms: -8n + -8n = -16n
(64 + -16n + n2) = 169

Solving
64 + -16n + n2 = 169

Solving for variable 'n'.

Reorder the terms:
64 + -169 + -16n + n2 = 169 + -169

Combine like terms: 64 + -169 = -105
-105 + -16n + n2 = 169 + -169

Combine like terms: 169 + -169 = 0
-105 + -16n + n2 = 0

Factor a trinomial.
(-5 + -1n)(21 + -1n) = 0

Subproblem 1

Set the factor '(-5 + -1n)' equal to zero and attempt to solve: Simplifying -5 + -1n = 0 Solving -5 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1n = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1n = 0 + 5 -1n = 0 + 5 Combine like terms: 0 + 5 = 5 -1n = 5 Divide each side by '-1'. n = -5 Simplifying n = -5

Subproblem 2

Set the factor '(21 + -1n)' equal to zero and attempt to solve: Simplifying 21 + -1n = 0 Solving 21 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + -1n = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -1n = 0 + -21 -1n = 0 + -21 Combine like terms: 0 + -21 = -21 -1n = -21 Divide each side by '-1'. n = 21 Simplifying n = 21

Solution

n = {-5, 21}

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