H
huynhox_amk


$ 1) x^3+2x=y (1)$
$ y^3 +2y=x (2)$
$ 2) x^2y +xy^2 = 30$
$ y^3 +x^3 =35 $
......................................THANK NHÌU...............................
$ y^3 +2y=x (2)$
$ 2) x^2y +xy^2 = 30$
$ y^3 +x^3 =35 $
......................................THANK NHÌU...............................