Question

Find r when (5)^((r)/(3))=125

Answer 1

Step-by-step explanation:

5^(r/3) = 125

5^(r/2) = 5^3

since bases are same power will be equal

so,

r/2 = 3

r = 3*2

r= 6

Answer 2

Answer : 9

Step-by-step explanation:

So when the bases are same, you can cancel it out and only the power will be left out. Marking scheme is attached..