Answer
Three Factors are :$-2y^2(y-3)(y-9)$
Work Step by Step
Given:$-2y^4+24y^3-54y^2$
Take the common terms out.
Thus,
$=-2y^2(y^2-12y+27)$
or, $=-2y^2(y^2-9y-3y+27)$
or, $=-2y^2(y-3)(y-9)$
Hence, Three Factors are :$-2y^2(y-3)(y-9)$