n^2-16n-43=-7

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Solution for n^2-16n-43=-7 equation:


Simplifying
n2 + -16n + -43 = -7

Reorder the terms:
-43 + -16n + n2 = -7

Solving
-43 + -16n + n2 = -7

Solving for variable 'n'.

Reorder the terms:
-43 + 7 + -16n + n2 = -7 + 7

Combine like terms: -43 + 7 = -36
-36 + -16n + n2 = -7 + 7

Combine like terms: -7 + 7 = 0
-36 + -16n + n2 = 0

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

Subproblem 1

Set the factor '(-2 + -1n)' equal to zero and attempt to solve: Simplifying -2 + -1n = 0 Solving -2 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1n = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1n = 0 + 2 -1n = 0 + 2 Combine like terms: 0 + 2 = 2 -1n = 2 Divide each side by '-1'. n = -2 Simplifying n = -2

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 = {-2, 18}

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