V=(90-2x)(40-2x)

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Solution for V=(90-2x)(40-2x) equation: 


Simplifying
V = (90 + -2x)(40 + -2x)

Multiply (90 + -2x) * (40 + -2x)
V = (90(40 + -2x) + -2x * (40 + -2x))
V = ((40 * 90 + -2x * 90) + -2x * (40 + -2x))
V = ((3600 + -180x) + -2x * (40 + -2x))
V = (3600 + -180x + (40 * -2x + -2x * -2x))
V = (3600 + -180x + (-80x + 4x2))

Combine like terms: -180x + -80x = -260x
V = (3600 + -260x + 4x2)

Solving
V = 3600 + -260x + 4x2

Solving for variable 'V'.

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

Simplifying
V = 3600 + -260x + 4x2

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