Question

Simplify (n^3-n)(n-2)!

Answer 1

amorfide, it's (n-2)! (factorial)

Answer 2

well this is embarrassing :P

Answer 3

\[\begin{align}
(n^3-n)(n-2)!&=n(n^2-1)(n-2)!\\
&=n(n+1)(n-1)(n-2)!\\
&=(n+1)n(n-1)(n-2)!\\
&=(n+1)!
\end{align}\]

Answer 4

thanks so much asnaseer!

Answer 5

yw