4r^2(r-4)=18-r

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Solution for 4r^2(r-4)=18-r equation: 


Simplifying
4r2(r + -4) = 18 + -1r

Reorder the terms:
4r2(-4 + r) = 18 + -1r
(-4 * 4r2 + r * 4r2) = 18 + -1r
(-16r2 + 4r3) = 18 + -1r

Solving
-16r2 + 4r3 = 18 + -1r

Solving for variable 'r'.

Reorder the terms:
-18 + r + -16r2 + 4r3 = 18 + -1r + -18 + r

Reorder the terms:
-18 + r + -16r2 + 4r3 = 18 + -18 + -1r + r

Combine like terms: 18 + -18 = 0
-18 + r + -16r2 + 4r3 = 0 + -1r + r
-18 + r + -16r2 + 4r3 = -1r + r

Combine like terms: -1r + r = 0
-18 + r + -16r2 + 4r3 = 0

The solution to this equation could not be determined.

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