8n^2=72n-160

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Solution for 8n^2=72n-160 equation:


Simplifying
8n2 = 72n + -160

Reorder the terms:
8n2 = -160 + 72n

Solving
8n2 = -160 + 72n

Solving for variable 'n'.

Reorder the terms:
160 + -72n + 8n2 = -160 + 72n + 160 + -72n

Reorder the terms:
160 + -72n + 8n2 = -160 + 160 + 72n + -72n

Combine like terms: -160 + 160 = 0
160 + -72n + 8n2 = 0 + 72n + -72n
160 + -72n + 8n2 = 72n + -72n

Combine like terms: 72n + -72n = 0
160 + -72n + 8n2 = 0

Factor out the Greatest Common Factor (GCF), '8'.
8(20 + -9n + n2) = 0

Factor a trinomial.
8((4 + -1n)(5 + -1n)) = 0

Ignore the factor 8.

Subproblem 1

Set the factor '(4 + -1n)' equal to zero and attempt to solve: Simplifying 4 + -1n = 0 Solving 4 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1n = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1n = 0 + -4 -1n = 0 + -4 Combine like terms: 0 + -4 = -4 -1n = -4 Divide each side by '-1'. n = 4 Simplifying n = 4

Subproblem 2

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

Solution

n = {4, 5}

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