It is as follows-
(5a2)3 = ?
Now in exponents, exponents above brackets, distributes itself among the numbers or variables. It is only possible when sign is multiply or divide. In case of addition like this one - ((x+2)(x+3))2 = (x+2)2(x+3)2
53(a2)3, now we will apply law of indices (You may directly multiply them)
= 53(a2a2a2)
= 53(a2+2+2)
= 53a6
Now normal multiplication
= 5 x 5 x 5 x a6
= 15 x 5 x a6
= 125a6
Therefore 125a6 is the answer
