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a fost răspuns

Scrieti urmatoarele numere rationale ca patrate ale altor numere rationale: 169/256;361/196;576/121;1,44;5,(4);0,025;74k/520,k apartine N ;43k,k apartine N

Răspuns :

169/256=13²/16²
361/196=19²/14²
576/121=24²/11²
1,44=1,2²
5,(4)=5 intregi si 4/9=49/9=7²/3²
0,025=25/1000=(5²/10²)x10