Question

1) 9*3^(-2)+4*(2/5)^(-2)

Answer 1

9*(1/9)+4*(25/4)=1+25=26

Answer 2

9*3^(-2)+4*(2/5)^(-2)=9*(1/3)^2+4*(5/2)^2=9/9+4*25/4=1+25=26