Verified answer

bonsoir

( 1/5)² x 5 ⁻³ =  5 ⁻² x 5 ⁻³ = 5 ⁻⁵

( 1/4 ) x 4 ⁻⁵ = 4 ⁻¹ x 4 ⁻⁵ = 4 ⁻⁶

( 2/3 ) ⁻⁴ x ( 3/2 ) ⁵ =  ( 2/3 ) ⁻⁴ x ( 2 /3 ) ⁻⁵ =( 2/3  ) ⁻⁹