2n^2+4n-720=0

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Solution for 2n^2+4n-720=0 equation:


Simplifying
2n2 + 4n + -720 = 0

Reorder the terms:
-720 + 4n + 2n2 = 0

Solving
-720 + 4n + 2n2 = 0

Solving for variable 'n'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-360 + 2n + n2) = 0

Factor a trinomial.
2((-20 + -1n)(18 + -1n)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-20 + -1n)' equal to zero and attempt to solve: Simplifying -20 + -1n = 0 Solving -20 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + -1n = 0 + 20 Combine like terms: -20 + 20 = 0 0 + -1n = 0 + 20 -1n = 0 + 20 Combine like terms: 0 + 20 = 20 -1n = 20 Divide each side by '-1'. n = -20 Simplifying n = -20

Subproblem 2

Set the factor '(18 + -1n)' equal to zero and attempt to solve: Simplifying 18 + -1n = 0 Solving 18 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + -1n = 0 + -18 Combine like terms: 18 + -18 = 0 0 + -1n = 0 + -18 -1n = 0 + -18 Combine like terms: 0 + -18 = -18 -1n = -18 Divide each side by '-1'. n = 18 Simplifying n = 18

Solution

n = {-20, 18}

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