3x^2-36=(3x-2)(x-2)

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Solution for 3x^2-36=(3x-2)(x-2) equation:


Simplifying
3x2 + -36 = (3x + -2)(x + -2)

Reorder the terms:
-36 + 3x2 = (3x + -2)(x + -2)

Reorder the terms:
-36 + 3x2 = (-2 + 3x)(x + -2)

Reorder the terms:
-36 + 3x2 = (-2 + 3x)(-2 + x)

Multiply (-2 + 3x) * (-2 + x)
-36 + 3x2 = (-2(-2 + x) + 3x * (-2 + x))
-36 + 3x2 = ((-2 * -2 + x * -2) + 3x * (-2 + x))
-36 + 3x2 = ((4 + -2x) + 3x * (-2 + x))
-36 + 3x2 = (4 + -2x + (-2 * 3x + x * 3x))
-36 + 3x2 = (4 + -2x + (-6x + 3x2))

Combine like terms: -2x + -6x = -8x
-36 + 3x2 = (4 + -8x + 3x2)

Add '-3x2' to each side of the equation.
-36 + 3x2 + -3x2 = 4 + -8x + 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-36 + 0 = 4 + -8x + 3x2 + -3x2
-36 = 4 + -8x + 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-36 = 4 + -8x + 0
-36 = 4 + -8x

Solving
-36 = 4 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
-36 + 8x = 4 + -8x + 8x

Combine like terms: -8x + 8x = 0
-36 + 8x = 4 + 0
-36 + 8x = 4

Add '36' to each side of the equation.
-36 + 36 + 8x = 4 + 36

Combine like terms: -36 + 36 = 0
0 + 8x = 4 + 36
8x = 4 + 36

Combine like terms: 4 + 36 = 40
8x = 40

Divide each side by '8'.
x = 5

Simplifying
x = 5

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