math hw
posted by David on .
2. If a^2b^2=20 and a+b=2, what is the value of ab?
I added the a^2b^2+20 and a+b+20, but i couldn't get the answer to equal ab.

Hey (a^2b^2)= (a+b)(ab) remember
forever
(a+b)(ab) = 20
2(ab) = 20
a  b = 10