2n^2+9n=-4

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Solution for 2n^2+9n=-4 equation:


Simplifying
2n2 + 9n = -4

Reorder the terms:
9n + 2n2 = -4

Solving
9n + 2n2 = -4

Solving for variable 'n'.

Reorder the terms:
4 + 9n + 2n2 = -4 + 4

Combine like terms: -4 + 4 = 0
4 + 9n + 2n2 = 0

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

Subproblem 1

Set the factor '(4 + n)' equal to zero and attempt to solve: Simplifying 4 + n = 0 Solving 4 + n = 0 Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + n = 0 + -4 Combine like terms: 4 + -4 = 0 0 + n = 0 + -4 n = 0 + -4 Combine like terms: 0 + -4 = -4 n = -4 Simplifying n = -4

Subproblem 2

Set the factor '(1 + 2n)' equal to zero and attempt to solve: Simplifying 1 + 2n = 0 Solving 1 + 2n = 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 + 2n = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2n = 0 + -1 2n = 0 + -1 Combine like terms: 0 + -1 = -1 2n = -1 Divide each side by '2'. n = -0.5 Simplifying n = -0.5

Solution

n = {-4, -0.5}

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