2n^2-n-120=0

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Solution for 2n^2-n-120=0 equation:


Simplifying
2n2 + -1n + -120 = 0

Reorder the terms:
-120 + -1n + 2n2 = 0

Solving
-120 + -1n + 2n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(-15 + -2n)(8 + -1n) = 0

Subproblem 1

Set the factor '(-15 + -2n)' equal to zero and attempt to solve: Simplifying -15 + -2n = 0 Solving -15 + -2n = 0 Move all terms containing n to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -2n = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -2n = 0 + 15 -2n = 0 + 15 Combine like terms: 0 + 15 = 15 -2n = 15 Divide each side by '-2'. n = -7.5 Simplifying n = -7.5

Subproblem 2

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

Solution

n = {-7.5, 8}

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