Question

Can u answer 15th question

Answer 1

Hope the answer will help you.

Answer 2

x= (2/3)^-1 /(3/2)^-2
= (3/2)^1 / (2/3)^2
= (3/2)* (3/2)^2
= (3/2)^3
x^-2= 1/x^2
x^2=[ (3/2)^3]^2
= (3/2)^6
= 729/64
x^-2= 64/729