Answer:
Step-by-step explanation:
9^(1/2) =3
this expression is : 3(r^(5/2) ×r^(-1) )(t×t^(1/2))
3r^(5/2 - 1)×t^(1+1/2)
3^(1/2)×t^(3/2)...... answer : 2
