(x-6)(2x+6)=(x+9)(x-4)

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Solution for (x-6)(2x+6)=(x+9)(x-4) equation:


Simplifying
(x + -6)(2x + 6) = (x + 9)(x + -4)

Reorder the terms:
(-6 + x)(2x + 6) = (x + 9)(x + -4)

Reorder the terms:
(-6 + x)(6 + 2x) = (x + 9)(x + -4)

Multiply (-6 + x) * (6 + 2x)
(-6(6 + 2x) + x(6 + 2x)) = (x + 9)(x + -4)
((6 * -6 + 2x * -6) + x(6 + 2x)) = (x + 9)(x + -4)
((-36 + -12x) + x(6 + 2x)) = (x + 9)(x + -4)
(-36 + -12x + (6 * x + 2x * x)) = (x + 9)(x + -4)
(-36 + -12x + (6x + 2x2)) = (x + 9)(x + -4)

Combine like terms: -12x + 6x = -6x
(-36 + -6x + 2x2) = (x + 9)(x + -4)

Reorder the terms:
-36 + -6x + 2x2 = (9 + x)(x + -4)

Reorder the terms:
-36 + -6x + 2x2 = (9 + x)(-4 + x)

Multiply (9 + x) * (-4 + x)
-36 + -6x + 2x2 = (9(-4 + x) + x(-4 + x))
-36 + -6x + 2x2 = ((-4 * 9 + x * 9) + x(-4 + x))
-36 + -6x + 2x2 = ((-36 + 9x) + x(-4 + x))
-36 + -6x + 2x2 = (-36 + 9x + (-4 * x + x * x))
-36 + -6x + 2x2 = (-36 + 9x + (-4x + x2))

Combine like terms: 9x + -4x = 5x
-36 + -6x + 2x2 = (-36 + 5x + x2)

Add '36' to each side of the equation.
-36 + -6x + 36 + 2x2 = -36 + 5x + 36 + x2

Reorder the terms:
-36 + 36 + -6x + 2x2 = -36 + 5x + 36 + x2

Combine like terms: -36 + 36 = 0
0 + -6x + 2x2 = -36 + 5x + 36 + x2
-6x + 2x2 = -36 + 5x + 36 + x2

Reorder the terms:
-6x + 2x2 = -36 + 36 + 5x + x2

Combine like terms: -36 + 36 = 0
-6x + 2x2 = 0 + 5x + x2
-6x + 2x2 = 5x + x2

Solving
-6x + 2x2 = 5x + x2

Solving for variable 'x'.

Reorder the terms:
-6x + -5x + 2x2 + -1x2 = 5x + x2 + -5x + -1x2

Combine like terms: -6x + -5x = -11x
-11x + 2x2 + -1x2 = 5x + x2 + -5x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
-11x + 1x2 = 5x + x2 + -5x + -1x2

Reorder the terms:
-11x + 1x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
-11x + 1x2 = 0 + x2 + -1x2
-11x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-11x + 1x2 = 0

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

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-11 + x)' equal to zero and attempt to solve: Simplifying -11 + x = 0 Solving -11 + x = 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 + x = 0 + 11 Combine like terms: -11 + 11 = 0 0 + x = 0 + 11 x = 0 + 11 Combine like terms: 0 + 11 = 11 x = 11 Simplifying x = 11

Solution

x = {0, 11}

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