x(5x-2)+x(2x-6)=(7x+9)(x-2)

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Solution for x(5x-2)+x(2x-6)=(7x+9)(x-2) equation:


Simplifying
x(5x + -2) + x(2x + -6) = (7x + 9)(x + -2)

Reorder the terms:
x(-2 + 5x) + x(2x + -6) = (7x + 9)(x + -2)
(-2 * x + 5x * x) + x(2x + -6) = (7x + 9)(x + -2)
(-2x + 5x2) + x(2x + -6) = (7x + 9)(x + -2)

Reorder the terms:
-2x + 5x2 + x(-6 + 2x) = (7x + 9)(x + -2)
-2x + 5x2 + (-6 * x + 2x * x) = (7x + 9)(x + -2)
-2x + 5x2 + (-6x + 2x2) = (7x + 9)(x + -2)

Reorder the terms:
-2x + -6x + 5x2 + 2x2 = (7x + 9)(x + -2)

Combine like terms: -2x + -6x = -8x
-8x + 5x2 + 2x2 = (7x + 9)(x + -2)

Combine like terms: 5x2 + 2x2 = 7x2
-8x + 7x2 = (7x + 9)(x + -2)

Reorder the terms:
-8x + 7x2 = (9 + 7x)(x + -2)

Reorder the terms:
-8x + 7x2 = (9 + 7x)(-2 + x)

Multiply (9 + 7x) * (-2 + x)
-8x + 7x2 = (9(-2 + x) + 7x * (-2 + x))
-8x + 7x2 = ((-2 * 9 + x * 9) + 7x * (-2 + x))
-8x + 7x2 = ((-18 + 9x) + 7x * (-2 + x))
-8x + 7x2 = (-18 + 9x + (-2 * 7x + x * 7x))
-8x + 7x2 = (-18 + 9x + (-14x + 7x2))

Combine like terms: 9x + -14x = -5x
-8x + 7x2 = (-18 + -5x + 7x2)

Add '-7x2' to each side of the equation.
-8x + 7x2 + -7x2 = -18 + -5x + 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-8x + 0 = -18 + -5x + 7x2 + -7x2
-8x = -18 + -5x + 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-8x = -18 + -5x + 0
-8x = -18 + -5x

Solving
-8x = -18 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
-8x + 5x = -18 + -5x + 5x

Combine like terms: -8x + 5x = -3x
-3x = -18 + -5x + 5x

Combine like terms: -5x + 5x = 0
-3x = -18 + 0
-3x = -18

Divide each side by '-3'.
x = 6

Simplifying
x = 6

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