من يستطيع الإجابة؟

[fafou crazy]

njaweblek ghir 3la 2em outtre fois nkemel ani 3eyan hh chooof
nberhnooo beli Un+1>(n+1)² w neferdoo Un >n² shiiiha alr
Un+2n+3>(n+1)² ....... Un+2n+3>n²++2n+1
hna deja 9olna Un>n² w 2n+3>2n+1 alr tweli
Un+2n+3>(n+1)² alr Un+1 shiha

[amine ami]

المشاركة الأصلية كتبت بواسطة fafou crazy

njaweblek ghir 3la 2em outtre fois nkemel ani 3eyan hh chooof
nberhnooo beli Un+1>(n+1)² w neferdoo Un >n² shiiiha alr
Un+2n+3>(n+1)² ....... Un+2n+3>n²++2n+1
hna deja 9olna Un>n² w 2n+3>2n+1 alr tweli
Un+2n+3>(n+1)² alr Un+1 shiha

khalina lborhan btarajo3 rak shih fih 100%
mais w3lach un=(n+1)²
imppossible psq madarlekch un kbira aw tossawi cpr sa