Răspuns:
a. (2* 2^2 *2^3)^8 : (-8)^15 =
(2^6)^8 : (-8)^15 =
2^48 : (-2^3)^15 =
2^48 : (-2)^45=
-2^3 = -8
b.
= (3^10)^4 : (-9)^19 =
3^40 : (-3^2)^19 =
3^40 : (-3)^38 =
-3 ^2 = -9
