n^2-4n-31=-10

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Solution for n^2-4n-31=-10 equation:


Simplifying
n2 + -4n + -31 = -10

Reorder the terms:
-31 + -4n + n2 = -10

Solving
-31 + -4n + n2 = -10

Solving for variable 'n'.

Reorder the terms:
-31 + 10 + -4n + n2 = -10 + 10

Combine like terms: -31 + 10 = -21
-21 + -4n + n2 = -10 + 10

Combine like terms: -10 + 10 = 0
-21 + -4n + n2 = 0

Factor a trinomial.
(-3 + -1n)(7 + -1n) = 0

Subproblem 1

Set the factor '(-3 + -1n)' equal to zero and attempt to solve: Simplifying -3 + -1n = 0 Solving -3 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1n = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1n = 0 + 3 -1n = 0 + 3 Combine like terms: 0 + 3 = 3 -1n = 3 Divide each side by '-1'. n = -3 Simplifying n = -3

Subproblem 2

Set the factor '(7 + -1n)' equal to zero and attempt to solve: Simplifying 7 + -1n = 0 Solving 7 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1n = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1n = 0 + -7 -1n = 0 + -7 Combine like terms: 0 + -7 = -7 -1n = -7 Divide each side by '-1'. n = 7 Simplifying n = 7

Solution

n = {-3, 7}

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