-5r^3+10r-20=

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Solution for -5r^3+10r-20= equation: 


Simplifying
-5r3 + 10r + -20 = 0

Reorder the terms:
-20 + 10r + -5r3 = 0

Solving
-20 + 10r + -5r3 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '5'.
5(-4 + 2r + -1r3) = 0

Ignore the factor 5.

Subproblem 1
Set the factor '(-4 + 2r + -1r3)' equal to zero and attempt to solve:

Simplifying
-4 + 2r + -1r3 = 0

Solving
-4 + 2r + -1r3 = 0

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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