9x^2+9=-18x

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Solution for 9x^2+9=-18x equation:


Simplifying
9x2 + 9 = -18x

Reorder the terms:
9 + 9x2 = -18x

Solving
9 + 9x2 = -18x

Solving for variable 'x'.

Reorder the terms:
9 + 18x + 9x2 = -18x + 18x

Combine like terms: -18x + 18x = 0
9 + 18x + 9x2 = 0

Factor out the Greatest Common Factor (GCF), '9'.
9(1 + 2x + x2) = 0

Factor a trinomial.
9((1 + x)(1 + x)) = 0

Ignore the factor 9.

Subproblem 1

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

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 = {-1, -1}

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