Posted by **Molly** on Sunday, January 13, 2013 at 6:11pm.

use exponent rules to simplify. Write as a single power, don't need to find the value.

[ (11/20)^4 x (11/20)^-8]^5

and (11/20)^-6

you cant leave an number to the power of a negative exponent. You have to change it like this ex : 2^-3 = 1/2^3 = 1/8