(x-9)(4x+3)=-9(x-9)

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Solution for (x-9)(4x+3)=-9(x-9) equation:


Simplifying
(x + -9)(4x + 3) = -9(x + -9)

Reorder the terms:
(-9 + x)(4x + 3) = -9(x + -9)

Reorder the terms:
(-9 + x)(3 + 4x) = -9(x + -9)

Multiply (-9 + x) * (3 + 4x)
(-9(3 + 4x) + x(3 + 4x)) = -9(x + -9)
((3 * -9 + 4x * -9) + x(3 + 4x)) = -9(x + -9)
((-27 + -36x) + x(3 + 4x)) = -9(x + -9)
(-27 + -36x + (3 * x + 4x * x)) = -9(x + -9)
(-27 + -36x + (3x + 4x2)) = -9(x + -9)

Combine like terms: -36x + 3x = -33x
(-27 + -33x + 4x2) = -9(x + -9)

Reorder the terms:
-27 + -33x + 4x2 = -9(-9 + x)
-27 + -33x + 4x2 = (-9 * -9 + x * -9)
-27 + -33x + 4x2 = (81 + -9x)

Solving
-27 + -33x + 4x2 = 81 + -9x

Solving for variable 'x'.

Reorder the terms:
-27 + -81 + -33x + 9x + 4x2 = 81 + -9x + -81 + 9x

Combine like terms: -27 + -81 = -108
-108 + -33x + 9x + 4x2 = 81 + -9x + -81 + 9x

Combine like terms: -33x + 9x = -24x
-108 + -24x + 4x2 = 81 + -9x + -81 + 9x

Reorder the terms:
-108 + -24x + 4x2 = 81 + -81 + -9x + 9x

Combine like terms: 81 + -81 = 0
-108 + -24x + 4x2 = 0 + -9x + 9x
-108 + -24x + 4x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-108 + -24x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-27 + -6x + x2) = 0

Factor a trinomial.
4((-3 + -1x)(9 + -1x)) = 0

Ignore the factor 4.

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 '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-3, 9}

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