3x^2=-8-11x

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Solution for 3x^2=-8-11x equation:


Simplifying
3x2 = -8 + -11x

Solving
3x2 = -8 + -11x

Solving for variable 'x'.

Reorder the terms:
8 + 11x + 3x2 = -8 + -11x + 8 + 11x

Reorder the terms:
8 + 11x + 3x2 = -8 + 8 + -11x + 11x

Combine like terms: -8 + 8 = 0
8 + 11x + 3x2 = 0 + -11x + 11x
8 + 11x + 3x2 = -11x + 11x

Combine like terms: -11x + 11x = 0
8 + 11x + 3x2 = 0

Factor a trinomial.
(8 + 3x)(1 + x) = 0

Subproblem 1

Set the factor '(8 + 3x)' equal to zero and attempt to solve: Simplifying 8 + 3x = 0 Solving 8 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 3x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3x = 0 + -8 3x = 0 + -8 Combine like terms: 0 + -8 = -8 3x = -8 Divide each side by '3'. x = -2.666666667 Simplifying x = -2.666666667

Subproblem 2

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

Solution

x = {-2.666666667, -1}

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