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

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


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

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

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

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

Multiply (6 + 2x) * (-9 + x)
-9x + 2x2 = (6(-9 + x) + 2x * (-9 + x))
-9x + 2x2 = ((-9 * 6 + x * 6) + 2x * (-9 + x))
-9x + 2x2 = ((-54 + 6x) + 2x * (-9 + x))
-9x + 2x2 = (-54 + 6x + (-9 * 2x + x * 2x))
-9x + 2x2 = (-54 + 6x + (-18x + 2x2))

Combine like terms: 6x + -18x = -12x
-9x + 2x2 = (-54 + -12x + 2x2)

Add '-2x2' to each side of the equation.
-9x + 2x2 + -2x2 = -54 + -12x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-9x + 0 = -54 + -12x + 2x2 + -2x2
-9x = -54 + -12x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-9x = -54 + -12x + 0
-9x = -54 + -12x

Solving
-9x = -54 + -12x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '12x' to each side of the equation.
-9x + 12x = -54 + -12x + 12x

Combine like terms: -9x + 12x = 3x
3x = -54 + -12x + 12x

Combine like terms: -12x + 12x = 0
3x = -54 + 0
3x = -54

Divide each side by '3'.
x = -18

Simplifying
x = -18

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