Question

36)Calculati:
a)$(-1) ^{21} + 2\frac{1}{2} : \sqrt{0,25} - \frac{20}{ \sqrt{300} } + \frac{ \sqrt{48} }{6} =$

P.S=La sfarsitul carti da raspunsul 4

Answer 1

-1+5/2:5/10-20/√300+√48/6=
-1+5-(20/10√3+4√3/6)=
-1+5=4
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