Question

How does one factor y^5 - 16y?

Answer 1

start with
\[y(y^4-16)\] and then factor \(t^4-16\) as the difference of two squares

Answer 2

So the final answer is " y(y^2+4)(y^2+4)"?

Answer 3

Sorry, one of those would be a negative 4, yes?

Answer 4

Yes

Answer 5

But the program is telling me that it's wrong... so I understand up to what satellite73 said, but I don't really understand what to do after that.
y(y^4-16), now how do I take the perfect square?

Answer 6

If you see a difference of two squares factor it. (Y^2-4) can be factored