9x^2+12x-18=3-8x

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Solution for 9x^2+12x-18=3-8x equation:


Simplifying
9x2 + 12x + -18 = 3 + -8x

Reorder the terms:
-18 + 12x + 9x2 = 3 + -8x

Solving
-18 + 12x + 9x2 = 3 + -8x

Solving for variable 'x'.

Reorder the terms:
-18 + -3 + 12x + 8x + 9x2 = 3 + -8x + -3 + 8x

Combine like terms: -18 + -3 = -21
-21 + 12x + 8x + 9x2 = 3 + -8x + -3 + 8x

Combine like terms: 12x + 8x = 20x
-21 + 20x + 9x2 = 3 + -8x + -3 + 8x

Reorder the terms:
-21 + 20x + 9x2 = 3 + -3 + -8x + 8x

Combine like terms: 3 + -3 = 0
-21 + 20x + 9x2 = 0 + -8x + 8x
-21 + 20x + 9x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
-21 + 20x + 9x2 = 0

Factor a trinomial.
(-3 + -1x)(7 + -9x) = 0

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(7 + -9x)' equal to zero and attempt to solve: Simplifying 7 + -9x = 0 Solving 7 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -9x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -9x = 0 + -7 -9x = 0 + -7 Combine like terms: 0 + -7 = -7 -9x = -7 Divide each side by '-9'. x = 0.7777777778 Simplifying x = 0.7777777778

Solution

x = {-3, 0.7777777778}

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