49 = 1*16+2*9+2*4+7*1
49 = 1*4^2 + 2*3^2 + 2*2^2 + 7*1^2 => suma de 12 patrate perfecte.
49 = 4^2 + 3^2 +3^2 + 2^2 +2^2 +1^2 + 1^2+ 1^2+ 1^2+ 1^2+ 1^2+ 1^2.
Xenon54
1 = 1² = pătrat perfect
4 = 2² = pătrat perfect
9 = 3² = pătrat perfect
16 = 4² = pătrat perfect
25 = 5² = pătrat perfect
36 = 6² = pătrat perfect
[tex] \bf 49 = 16 + 9 + 9 +4 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1[/tex]
[tex] \red{\bf 49={4}^{2}+{3}^{2}+{3}^{2}+{2}^{2}+{2}^{2}+{1}^{2}+{1}^{2}+{1}^{2}+{1}^{2}+{1}^{2}+ {1}^{2}+{1}^{2}}[/tex]
