R=(20+1x)(500-20x)

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Solution for R=(20+1x)(500-20x) equation: 


Simplifying
R = (20 + 1x)(500 + -20x)

Multiply (20 + 1x) * (500 + -20x)
R = (20(500 + -20x) + 1x * (500 + -20x))
R = ((500 * 20 + -20x * 20) + 1x * (500 + -20x))
R = ((10000 + -400x) + 1x * (500 + -20x))
R = (10000 + -400x + (500 * 1x + -20x * 1x))
R = (10000 + -400x + (500x + -20x2))

Combine like terms: -400x + 500x = 100x
R = (10000 + 100x + -20x2)

Solving
R = 10000 + 100x + -20x2

Solving for variable 'R'.

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

Simplifying
R = 10000 + 100x + -20x2

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