Răspuns:
a) (5^2-2^5÷2)÷3-1^2019=
(25-32÷2)÷3-1=(25-16)÷3-1=9÷3-1=3-1=2
b) (3^2×2^6-2^5×6)÷12-2^5=
(9×64-32×6)÷12-32=(576-192)÷12-32=384÷12-32=32-32=0
c) (7^4-7^3)÷(7^2-7)-2^3×5=
(2401-343)÷(49-7)-8×5=
( 2058÷42)-40=49-40=9
^ inseamna la puterea
