Y=-2(x+3)(x-7)

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Solution for Y=-2(x+3)(x-7) equation: 


Simplifying
Y = -2(x + 3)(x + -7)

Reorder the terms:
Y = -2(3 + x)(x + -7)

Reorder the terms:
Y = -2(3 + x)(-7 + x)

Multiply (3 + x) * (-7 + x)
Y = -2(3(-7 + x) + x(-7 + x))
Y = -2((-7 * 3 + x * 3) + x(-7 + x))
Y = -2((-21 + 3x) + x(-7 + x))
Y = -2(-21 + 3x + (-7 * x + x * x))
Y = -2(-21 + 3x + (-7x + x2))

Combine like terms: 3x + -7x = -4x
Y = -2(-21 + -4x + x2)
Y = (-21 * -2 + -4x * -2 + x2 * -2)
Y = (42 + 8x + -2x2)

Solving
Y = 42 + 8x + -2x2

Solving for variable 'Y'.

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

Simplifying
Y = 42 + 8x + -2x2

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