1.Calculati: [2,(4):1,(6)] la puterea 2 : 0,15(1)

Răspuns :

[2,(4):1,(6)]^2 : 0,15(1)=

={[(24-2)/9]:[(16-1)/9]}^2 :[(151-15)/900]=

=[(22/9)x9/15]^2 x(900/136)=

=(22/15)^2 x(225/34)=

=(484/225) x(225/34)=484/34=242/17