How would you solve this? solving the parentheses first? or outside of the parentheses ?
someone explain?

Explanation:

First simplify the stuff inside the parenthesis. The a^3 and a^4 multiply to get a^3*a^4 = a^(3+4) = a^7

So we end up with (2a^7)^5

Now raise each piece to the 5th power

2^5 = 2*2*2*2*2 = 32

(a^7)^5 = a^(7*5) = a^35

Then put it back together to end up with the answer 32a^35

Alternatively, you can raise each part to the 5th power

2^5 = 32

(a^3)^5 = a^15

(a^4)^5 = a^20

So we have 32*a^15*a^20 which simplifies to 32a^35 after we add the exponents (15+20 = 35)