x^2+x=-9x-16

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Solution for x^2+x=-9x-16 equation:


Simplifying
x2 + x = -9x + -16

Reorder the terms:
x + x2 = -9x + -16

Reorder the terms:
x + x2 = -16 + -9x

Solving
x + x2 = -16 + -9x

Solving for variable 'x'.

Reorder the terms:
16 + x + 9x + x2 = -16 + -9x + 16 + 9x

Combine like terms: x + 9x = 10x
16 + 10x + x2 = -16 + -9x + 16 + 9x

Reorder the terms:
16 + 10x + x2 = -16 + 16 + -9x + 9x

Combine like terms: -16 + 16 = 0
16 + 10x + x2 = 0 + -9x + 9x
16 + 10x + x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
16 + 10x + x2 = 0

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

Subproblem 1

Set the factor '(8 + x)' equal to zero and attempt to solve: Simplifying 8 + x = 0 Solving 8 + x = 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 + x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + x = 0 + -8 x = 0 + -8 Combine like terms: 0 + -8 = -8 x = -8 Simplifying x = -8

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 = {-8, -2}

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