a) 2^5 + 2^5 = 2 * 2^5 = 2^6
b) 2^99 + 2^99 = 2 * 2^99 = 2^100
c) 1+2^0+...+100^0 = 1+1+...+1 = 100*1 = 100
d) 3 + 2*3 + 2*3^2 + 2*3^3 = 3 + 2*3 + 2*9 + 2*27 = 3+6+18+54 = 81 = 3^4
e) 3 + 2*3 + 2*3^2 +...+ 2*3^99 =
3*(1+2) + 2*3^2 +...+ 2*3^99 =
3*3 + 2*3^2 +...+ 2*3^99 =
3^2 + 2*3^2 +...+ 2*3^99 =
3^2*(1+2) +...+2*3^99 =
3^3 +...+ 2*3^99 =
...
3^99 + 2*3^99 =
3^99*(1+2) = 3^100
f)7^59 + 2*7^59 + 4*7^59 =
7^59*(1+2+4) =
7^59 * 7 = 7^60