n^2=20n-100

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Solution for n^2=20n-100 equation:


Simplifying
n2 = 20n + -100

Reorder the terms:
n2 = -100 + 20n

Solving
n2 = -100 + 20n

Solving for variable 'n'.

Reorder the terms:
100 + -20n + n2 = -100 + 20n + 100 + -20n

Reorder the terms:
100 + -20n + n2 = -100 + 100 + 20n + -20n

Combine like terms: -100 + 100 = 0
100 + -20n + n2 = 0 + 20n + -20n
100 + -20n + n2 = 20n + -20n

Combine like terms: 20n + -20n = 0
100 + -20n + n2 = 0

Factor a trinomial.
(10 + -1n)(10 + -1n) = 0

Subproblem 1

Set the factor '(10 + -1n)' equal to zero and attempt to solve: Simplifying 10 + -1n = 0 Solving 10 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1n = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1n = 0 + -10 -1n = 0 + -10 Combine like terms: 0 + -10 = -10 -1n = -10 Divide each side by '-1'. n = 10 Simplifying n = 10

Subproblem 2

Set the factor '(10 + -1n)' equal to zero and attempt to solve: Simplifying 10 + -1n = 0 Solving 10 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1n = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1n = 0 + -10 -1n = 0 + -10 Combine like terms: 0 + -10 = -10 -1n = -10 Divide each side by '-1'. n = 10 Simplifying n = 10

Solution

n = {10, 10}

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