2n^2+7n=-5

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Solution for 2n^2+7n=-5 equation:


Simplifying
2n2 + 7n = -5

Reorder the terms:
7n + 2n2 = -5

Solving
7n + 2n2 = -5

Solving for variable 'n'.

Reorder the terms:
5 + 7n + 2n2 = -5 + 5

Combine like terms: -5 + 5 = 0
5 + 7n + 2n2 = 0

Factor a trinomial.
(5 + 2n)(1 + n) = 0

Subproblem 1

Set the factor '(5 + 2n)' equal to zero and attempt to solve: Simplifying 5 + 2n = 0 Solving 5 + 2n = 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 + 2n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2n = 0 + -5 2n = 0 + -5 Combine like terms: 0 + -5 = -5 2n = -5 Divide each side by '2'. n = -2.5 Simplifying n = -2.5

Subproblem 2

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

Solution

n = {-2.5, -1}

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