a × a = 9
3 × 3 =9
b × b = 16
4 ×4 =16
c × a = 25
( aici nu are sens, pt ca a=3 si 25 nu se imparte exact la 3)
a×b =12
3×4=12
b×c =20
4×5 = 20
a×c = 15
3 × 5 =15
b×c - a×c =5
4 ×5 - 3×5 = 5
20 - 15 =5
a×c + b×c =35
3×5 + 4 ×5 =35
15 + 20 =35
c×c - a×b =13
5 × 5 - 3 ×4 =13
25 - 12 =13