Răspuns:
[tex]n = \: 4 \times {3}^{6} + 7 \times {3}^{7} = > patrat \: perfect \\ n = {3}^{6} (4 + 7 \times 3) = {3}^{6} \times 25 = ( {3}^{3} )^{2} \times {5}^{2} = {27}^{2} \times {5}^{2} = (27 \times 5)^{2} = 135^{2} = > p.p.[/tex]
Sper ca e super!!
Succes la scoala mereu!! =))
