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

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


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

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

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

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

Combine like terms: -9x + 6x = -3x
y = (-54 + -3x + x2)

Solving
y = -54 + -3x + x2

Solving for variable 'y'.

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

Simplifying
y = -54 + -3x + x2

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