Testul 2 exercitiul 3,4

Răspuns:
3: a) 2²-2×2×-3±3²=±21
b)(2-3)²=-1×-1=-1
d) 2-3)³=-1×-1×-1=-1
4:a)8×8×8×8:-4×-4×-4×-4-×-4×-4+(-2)÷ (-2)⁰=1