Question

A) (2/9)^10 * (2/9)^-11
Б) (-3)^-2 * 9 + (1/2)^-1

Answer 1

$( frac{2}{9})^{10}* ( frac{2}{9})^{-11}=( frac{2}{9})^{10+(-11)}=( frac{2}{9})^{-1}= frac{9}{2} =4.5 \ \ (-3)^{-2}*9+( frac{1}{2} )^{-1}=(- frac{1}{3})^2*9+2= frac{1}{9}*9+2=1+2=3$