Question

What are the factors of `y^3-4y`?

Answer 1

`rArr y(y+2)(y-2)`

Explanation:

`y^3-4y`

`rArr y (y^2-4)`

`rArr y (y^2-2^2)`

`rArr y (y+2)(y-2)`

`:. y, (y+2), (y-2)` are the factors of `y^3-4`.