y=a(x+9)(x-5)

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Solution for y=a(x+9)(x-5) equation: 


Simplifying
y = a(x + 9)(x + -5)

Reorder the terms:
y = a(9 + x)(x + -5)

Reorder the terms:
y = a(9 + x)(-5 + x)

Multiply (9 + x) * (-5 + x)
y = a(9(-5 + x) + x(-5 + x))
y = a((-5 * 9 + x * 9) + x(-5 + x))
y = a((-45 + 9x) + x(-5 + x))
y = a(-45 + 9x + (-5 * x + x * x))
y = a(-45 + 9x + (-5x + x2))

Combine like terms: 9x + -5x = 4x
y = a(-45 + 4x + x2)
y = (-45 * a + 4x * a + x2 * a)
y = (-45a + 4ax + ax2)

Solving
y = -45a + 4ax + ax2

Solving for variable 'y'.

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

Simplifying
y = -45a + 4ax + ax2

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