y=(9x+1)(x-8)

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Solution for y=(9x+1)(x-8) equation: 


Simplifying
y = (9x + 1)(x + -8)

Reorder the terms:
y = (1 + 9x)(x + -8)

Reorder the terms:
y = (1 + 9x)(-8 + x)

Multiply (1 + 9x) * (-8 + x)
y = (1(-8 + x) + 9x * (-8 + x))
y = ((-8 * 1 + x * 1) + 9x * (-8 + x))
y = ((-8 + 1x) + 9x * (-8 + x))
y = (-8 + 1x + (-8 * 9x + x * 9x))
y = (-8 + 1x + (-72x + 9x2))

Combine like terms: 1x + -72x = -71x
y = (-8 + -71x + 9x2)

Solving
y = -8 + -71x + 9x2

Solving for variable 'y'.

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

Simplifying
y = -8 + -71x + 9x2

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