Răspunsuri

2014-09-05T21:56:21+03:00
A)1.25/0.05-  2\sqrt{7} *(-2.5-4.8)=25-2\sqrt{7}  *(-7.3)=25+14.6;
b)5 \sqrt{7} *(-2.4)+6.24/(0.04-0.24)=5 \sqrt{7} *(-1.92)=-9.2 \sqrt{7}