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2014-10-05T20:38:21+03:00
A) (4+8:4)*25*1,25=(4+2)*25*1,25=6*25*1,25=150*1,25=187,5
b) -8*0,8-1=-6,4-1=-7,4
c) rationalizam 8/√3 cu √3 iar 7/3√3 cu √3
√38(8√3/3+7√3/9)= (amplificam 8√3/3 cu 3)        
=√38(24√3/9+7√3/9)
=
√38*31√3/9
=31
√114/9
1 5 1