X 3 )( y 2 ) 2x 3y 1 July 8, 2019 16 32 64 128 X y 2 2x 3y 1 2 x 3 y 17 2x 2 3y 1 5 2 x y 2 7 x y )+ 3 0 2x 3y =- 1 X 3 0 y 2 0 2x 3y 12 X y 2 2x 3y 14 X 3 y =- 2 is a solution of equation 2x 3y 12 X 5 y 3 z 2 và 2x 3y 100 5 x 3 y 1 3 2x 2 3y 5 3 2x 5 3y =- 2 x 3 y 2 13 6 X 3 x 2y 2x 2 xy y 2 3y x 1 (x+y) 3
