Răspunsuri

2014-08-24T13:01:32+03:00
(2x+3)(2x+4)=56
Apoi faci distributivitate si la urmatorul succes.
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Cel mai inteligent răspuns!
2014-08-24T18:39:35+03:00
56=7x8 Deci 2x+3=7 2x=7—3=4 X=4:2=2 13=1x13 Deci X—1=1 X=2 Y+2=13 Y=13—2=11
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