(v)x=x(20-2x)(18-x)

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Solution for (v)x=x(20-2x)(18-x) equation: 


Simplifying
(v) * x = x(20 + -2x)(18 + -1x)

Multiply v * x
vx = x(20 + -2x)(18 + -1x)

Multiply (20 + -2x) * (18 + -1x)
vx = x(20(18 + -1x) + -2x * (18 + -1x))
vx = x((18 * 20 + -1x * 20) + -2x * (18 + -1x))
vx = x((360 + -20x) + -2x * (18 + -1x))
vx = x(360 + -20x + (18 * -2x + -1x * -2x))
vx = x(360 + -20x + (-36x + 2x2))

Combine like terms: -20x + -36x = -56x
vx = x(360 + -56x + 2x2)
vx = (360 * x + -56x * x + 2x2 * x)
vx = (360x + -56x2 + 2x3)

Solving
vx = 360x + -56x2 + 2x3

Solving for variable 'v'.

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

Divide each side by 'x'.
v = 360 + -56x + 2x2

Simplifying
v = 360 + -56x + 2x2

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