Am nevoie la ex 1 b) si c)

Răspuns:
a) (7¹³:7¹¹-7⁰):2⁴=
(7¹³‐¹¹-7⁰):2⁴=
(7²-7⁰):2⁴=
48:2⁴=
48:16=3
b) (225:5²+5²)³:10²=
(15²:5²+5⁰)³:10²=
(225:25+1)³:10²=
(9+1)³:10²=
10³:10²=
10³-²=10¹