Răspuns :
Răspuns:
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49 = 1*16+2*9+2*4+7*1
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49 = 1*4²+2*3²+2*2²+7*1² → suma a două pătrate perfecte;
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Răspuns:
––––––––––––––––––––––––––––––––––
49 = 1*16+2*9+2*4+7*1
––––––––––––––––––––––––––––––––––
49 = 1*4²+2*3²+2*2²+7*1² → suma a două pătrate perfecte;
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