(1²+2²+3²) | (14²–14) = ? clasa a V-a​

Răspuns :

[tex]\it 1^2+2^2+3^2=1+4+9=14\\ \\ 14^2-14=14(14+1)=14\cdot15\\ \\ Evident,\ \ 14\Big |14\cdot15[/tex]