Va rog dau Coroana

a)
7^2 + 4^3- 2*(2^2-^3)=
^98 + ^48- 2*(^8-^3)=
^136-2* ^5=
^136-^10=
^126
b)
(3^2-^3)*(2^2+4^3)=
(^18-^3)*(^8+^48)=
^15*^56=
^840
^=Radical