Not sure what index form is but
48=2 times 2 times 2 times 2 times 3
this is also
48=2^3 times 3
I'll just help quickly with a couple of expressions that are equivalent.
3(m+5+9m)
If you solve it out, you get 3m+15+27m.
Simply the expression to get 30m+15.
You can regroup to make another expression 5(6m+3) which is also equal.
The answer is square
Hope it helps
Im not sure what your asking add more please