Ответ:

1)x^5 + x^3 = x^8

2)(x^3)^6 = x^18

3) x^8/x^4 = x^4

a) (2m)^5 = 32m^5

b) (x/y)^7 = x^7/y^7

a^7 ( a^2)^4 = a^15

(2^10)(2^4)/2^11 = 8