Final Answer
$y^2\left(y-3\right)\left(y+3\right)$
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Step-by-step Solution
Specify the solving method
1
Factor the polynomial $\left(y^2-3y\right)$ by it's greatest common factor (GCF): $y$
$y\left(y-3\right)\left(y^2+3y\right)$
2
Factor the polynomial $\left(y^2+3y\right)$ by it's greatest common factor (GCF): $y$
$y^2\left(y-3\right)\left(y+3\right)$
Final Answer
$y^2\left(y-3\right)\left(y+3\right)$