Question

Pentru a=+2 si b=-3 aflati egalitatile​

Answer 1

Răspuns:

a. (2-3)^2=2^2-2×2×3+(-3)^2

1=4-12+9

1=1 Adevarat

b.(2+3)^2= 2^2+2×2×3+(-3)^3

5^2=4+12+9

25=25 Adevarat