Question

efectuati a)9 la puterea 45:9 la puterea 42-2 la puterea 1-3a puterea 3+20 la puterea 2=

Answer 1

a) 9^45:9^42-2^1-3^3+20^2=
    =9^3-2-27+400=
    =729-2-27+400=
    =727-27+400=
    =700+400=1100

Answer 2

..............................................