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

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


Simplifying
Y = 2(7 + -1x)(3 + x)

Multiply (7 + -1x) * (3 + x)
Y = 2(7(3 + x) + -1x * (3 + x))
Y = 2((3 * 7 + x * 7) + -1x * (3 + x))
Y = 2((21 + 7x) + -1x * (3 + x))
Y = 2(21 + 7x + (3 * -1x + x * -1x))
Y = 2(21 + 7x + (-3x + -1x2))

Combine like terms: 7x + -3x = 4x
Y = 2(21 + 4x + -1x2)
Y = (21 * 2 + 4x * 2 + -1x2 * 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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