4x^2-9=12x-18

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Solution for 4x^2-9=12x-18 equation:


Simplifying
4x2 + -9 = 12x + -18

Reorder the terms:
-9 + 4x2 = 12x + -18

Reorder the terms:
-9 + 4x2 = -18 + 12x

Solving
-9 + 4x2 = -18 + 12x

Solving for variable 'x'.

Reorder the terms:
-9 + 18 + -12x + 4x2 = -18 + 12x + 18 + -12x

Combine like terms: -9 + 18 = 9
9 + -12x + 4x2 = -18 + 12x + 18 + -12x

Reorder the terms:
9 + -12x + 4x2 = -18 + 18 + 12x + -12x

Combine like terms: -18 + 18 = 0
9 + -12x + 4x2 = 0 + 12x + -12x
9 + -12x + 4x2 = 12x + -12x

Combine like terms: 12x + -12x = 0
9 + -12x + 4x2 = 0

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

Subproblem 1

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

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 = {1.5, 1.5}

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