Răspunsuri

2014-08-01T14:55:52+03:00
3a² +5b³= 3 *5² + 5* 2³= 3*25 +5* 8= 75 +40=105
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2014-08-01T14:56:26+03:00
 3a²+5b³=3x5²+5x2³
=3x25+5x8
=75+30
=105