0=4n^2+28n-240

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Solution for 0=4n^2+28n-240 equation:


Simplifying
0 = 4n2 + 28n + -240

Reorder the terms:
0 = -240 + 28n + 4n2

Solving
0 = -240 + 28n + 4n2

Solving for variable 'n'.

Combine like terms: 0 + 240 = 240
240 + -28n + -4n2 = -240 + 28n + 4n2 + 240 + -28n + -4n2

Reorder the terms:
240 + -28n + -4n2 = -240 + 240 + 28n + -28n + 4n2 + -4n2

Combine like terms: -240 + 240 = 0
240 + -28n + -4n2 = 0 + 28n + -28n + 4n2 + -4n2
240 + -28n + -4n2 = 28n + -28n + 4n2 + -4n2

Combine like terms: 28n + -28n = 0
240 + -28n + -4n2 = 0 + 4n2 + -4n2
240 + -28n + -4n2 = 4n2 + -4n2

Combine like terms: 4n2 + -4n2 = 0
240 + -28n + -4n2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(60 + -7n + -1n2) = 0

Factor a trinomial.
4((5 + -1n)(12 + n)) = 0

Ignore the factor 4.

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 '(12 + n)' equal to zero and attempt to solve: Simplifying 12 + n = 0 Solving 12 + n = 0 Move all terms containing n to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + n = 0 + -12 Combine like terms: 12 + -12 = 0 0 + n = 0 + -12 n = 0 + -12 Combine like terms: 0 + -12 = -12 n = -12 Simplifying n = -12

Solution

n = {5, -12}

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