2x^2+9x+2=-8

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Solution for 2x^2+9x+2=-8 equation:


Simplifying
2x2 + 9x + 2 = -8

Reorder the terms:
2 + 9x + 2x2 = -8

Solving
2 + 9x + 2x2 = -8

Solving for variable 'x'.

Reorder the terms:
2 + 8 + 9x + 2x2 = -8 + 8

Combine like terms: 2 + 8 = 10
10 + 9x + 2x2 = -8 + 8

Combine like terms: -8 + 8 = 0
10 + 9x + 2x2 = 0

Factor a trinomial.
(5 + 2x)(2 + x) = 0

Subproblem 1

Set the factor '(5 + 2x)' equal to zero and attempt to solve: Simplifying 5 + 2x = 0 Solving 5 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 2x = 0 + -5 2x = 0 + -5 Combine like terms: 0 + -5 = -5 2x = -5 Divide each side by '2'. x = -2.5 Simplifying x = -2.5

Subproblem 2

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

Solution

x = {-2.5, -2}

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