4n^2=-40n-100

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Solution for 4n^2=-40n-100 equation:


Simplifying
4n2 = -40n + -100

Reorder the terms:
4n2 = -100 + -40n

Solving
4n2 = -100 + -40n

Solving for variable 'n'.

Reorder the terms:
100 + 40n + 4n2 = -100 + -40n + 100 + 40n

Reorder the terms:
100 + 40n + 4n2 = -100 + 100 + -40n + 40n

Combine like terms: -100 + 100 = 0
100 + 40n + 4n2 = 0 + -40n + 40n
100 + 40n + 4n2 = -40n + 40n

Combine like terms: -40n + 40n = 0
100 + 40n + 4n2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(25 + 10n + n2) = 0

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

Ignore the factor 4.

Subproblem 1

Set the factor '(5 + n)' equal to zero and attempt to solve: Simplifying 5 + n = 0 Solving 5 + n = 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 + n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + n = 0 + -5 n = 0 + -5 Combine like terms: 0 + -5 = -5 n = -5 Simplifying n = -5

Subproblem 2

Set the factor '(5 + n)' equal to zero and attempt to solve: Simplifying 5 + n = 0 Solving 5 + n = 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 + n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + n = 0 + -5 n = 0 + -5 Combine like terms: 0 + -5 = -5 n = -5 Simplifying n = -5

Solution

n = {-5, -5}

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