Answer
$5y^3-20y^2 = (5y^2)~(y-4)$
Work Step by Step
The GCF of $~[5y^3-20y^2]~$ is $~5y^2$
We can factor by using the GCF:
$5y^3-20y^2 = (5y^2)~(y-4)$
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