I'm rushing through review homework and I came up against one that I can't solve for the same answer the book has.

$\displaystyle \frac{-5^2\times10+10\times2^4}{-5-3-1}$

The book says this evaluates to 10. I am getting something more like $\displaystyle \frac{410}{-9}$

Any ideas what I might be doing wrong? I suspect it's order of operations but I can't nail it.