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a fost răspuns

a)3,75-2:0,25+1,4.3,55+1,2la puterea treia
b)6,24:0,4+7,65•20-1000•0,01•5la puterea 2
c)3 1pe4•2 5pe8-15 1pe2:3 3pe4+6,(2)•9pe23-11la puterea2•10la puterea 2
d)4,1(15)•99-13,(12)•100la puterea 2 +16,0(21).10000.