Multiply the following polynomials

-2r(8r+5)

-16r^2 + 5
-16r^2 + 10
-16r^2 - 10r
-16r^2 - 10

-16r^2 - 10r

To multiply the given polynomial -2r(8r+5), we need to distribute the -2r to each term inside the parentheses.

This will give us:

-2r * 8r = -16r^2
-2r * 5 = -10r

So the product of -2r(8r+5) is:

-16r^2 - 10r