R(x)=(81-2x)(210+6x)

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Solution for R(x)=(81-2x)(210+6x) equation: 


Simplifying
R(x) = (81 + -2x)(210 + 6x)

Multiply R * x
xR = (81 + -2x)(210 + 6x)

Multiply (81 + -2x) * (210 + 6x)
xR = (81(210 + 6x) + -2x * (210 + 6x))
xR = ((210 * 81 + 6x * 81) + -2x * (210 + 6x))
xR = ((17010 + 486x) + -2x * (210 + 6x))
xR = (17010 + 486x + (210 * -2x + 6x * -2x))
xR = (17010 + 486x + (-420x + -12x2))

Combine like terms: 486x + -420x = 66x
xR = (17010 + 66x + -12x2)

Solving
xR = 17010 + 66x + -12x2

Solving for variable 'x'.

Reorder the terms:
-17010 + -66x + xR + 12x2 = 17010 + 66x + -12x2 + -17010 + -66x + 12x2

Reorder the terms:
-17010 + -66x + xR + 12x2 = 17010 + -17010 + 66x + -66x + -12x2 + 12x2

Combine like terms: 17010 + -17010 = 0
-17010 + -66x + xR + 12x2 = 0 + 66x + -66x + -12x2 + 12x2
-17010 + -66x + xR + 12x2 = 66x + -66x + -12x2 + 12x2

Combine like terms: 66x + -66x = 0
-17010 + -66x + xR + 12x2 = 0 + -12x2 + 12x2
-17010 + -66x + xR + 12x2 = -12x2 + 12x2

Combine like terms: -12x2 + 12x2 = 0
-17010 + -66x + xR + 12x2 = 0

The solution to this equation could not be determined.

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