18x^2-12x-22=8x^2

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Solution for 18x^2-12x-22=8x^2 equation:


Simplifying
18x2 + -12x + -22 = 8x2

Reorder the terms:
-22 + -12x + 18x2 = 8x2

Solving
-22 + -12x + 18x2 = 8x2

Solving for variable 'x'.

Combine like terms: 18x2 + -8x2 = 10x2
-22 + -12x + 10x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
-22 + -12x + 10x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-11 + -6x + 5x2) = 0

Factor a trinomial.
2((-1 + -1x)(11 + -5x)) = 0

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

Set the factor '(11 + -5x)' equal to zero and attempt to solve: Simplifying 11 + -5x = 0 Solving 11 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -5x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -5x = 0 + -11 -5x = 0 + -11 Combine like terms: 0 + -11 = -11 -5x = -11 Divide each side by '-5'. x = 2.2 Simplifying x = 2.2

Solution

x = {-1, 2.2}

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