-4x^2=18x+18

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Solution for -4x^2=18x+18 equation:


Simplifying
-4x2 = 18x + 18

Reorder the terms:
-4x2 = 18 + 18x

Solving
-4x2 = 18 + 18x

Solving for variable 'x'.

Reorder the terms:
-18 + -18x + -4x2 = 18 + 18x + -18 + -18x

Reorder the terms:
-18 + -18x + -4x2 = 18 + -18 + 18x + -18x

Combine like terms: 18 + -18 = 0
-18 + -18x + -4x2 = 0 + 18x + -18x
-18 + -18x + -4x2 = 18x + -18x

Combine like terms: 18x + -18x = 0
-18 + -18x + -4x2 = 0

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

Factor a trinomial.
-2((3 + x)(3 + 2x)) = 0

Ignore the factor -2.

Subproblem 1

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(3 + 2x)' equal to zero and attempt to solve: Simplifying 3 + 2x = 0 Solving 3 + 2x = 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 + 2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 0 + -3 2x = 0 + -3 Combine like terms: 0 + -3 = -3 2x = -3 Divide each side by '2'. x = -1.5 Simplifying x = -1.5

Solution

x = {-3, -1.5}

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