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b)[(3^1/4-2^1/4)(3^1/4+(√2)^1/2]²/[√2-√3]²=(√3-√2)²/(√2-√3)²=[3-2√6+2]/[2-2√6+3]=1
c
5^1/2*25^-1/3*∛25/125^-1*(piew.6stopz 5³)=5^1/2*(5²)^-1/3*(5²)^1/3/(5³)^-1*(5³)^1/6=5*^1/2*5^-2/3*5^2/3/5^-3*5^3/6=5^1/2*5^0/5^-5/2=5^(1/2+5/2)=5³=125