Y=-(2x-1)(4x+5)

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Solution for Y=-(2x-1)(4x+5) equation: 


Simplifying
Y = -1(2x + -1)(4x + 5)

Reorder the terms:
Y = -1(-1 + 2x)(4x + 5)

Reorder the terms:
Y = -1(-1 + 2x)(5 + 4x)

Multiply (-1 + 2x) * (5 + 4x)
Y = -1(-1(5 + 4x) + 2x * (5 + 4x))
Y = -1((5 * -1 + 4x * -1) + 2x * (5 + 4x))
Y = -1((-5 + -4x) + 2x * (5 + 4x))
Y = -1(-5 + -4x + (5 * 2x + 4x * 2x))
Y = -1(-5 + -4x + (10x + 8x2))

Combine like terms: -4x + 10x = 6x
Y = -1(-5 + 6x + 8x2)
Y = (-5 * -1 + 6x * -1 + 8x2 * -1)
Y = (5 + -6x + -8x2)

Solving
Y = 5 + -6x + -8x2

Solving for variable 'Y'.

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

Simplifying
Y = 5 + -6x + -8x2

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