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2014-10-05T22:09:00+03:00
a) (√27-4)(3√3+4)=(3√3-4)(3√3+4)=27-16=11


b) (√2-1)²+ 2√2=2-2√2+1+2√2=3


c) -0,(6) +2*0,(3)=.
-0.(6)+0.(6)=0
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