Question

Rezolvati a)15+5×(23-4la puterea a doua ×23 la puterea 0 )-49 = ...;b) 2 la puterea a patra ×5-5×(2 la puterea a cincea -5 la puterea a doua )+25=...;

Answer 1

a)15+5*(23-4^2*23^0)-49=
15+5*(23-16*1)-49=
15+5*7-49=
15+35-49=
50-59=1
b)2^4*5-5*(2^5-5^2)+25=
16*5-5*(32-25)+25=
80-5*7+25=
80-35-25=
45+25=70