Xy x 2y 3 4 July 8, 2019 16 32 64 128 X 4y 3 xy 2y 9 Xy 2 x 2y 1 4y 3 Xy 2z 3 x 2y 3z 4 3 Xy 2x 3 x 2y 2 6 4x X 2y )( x 4y 3 )/ xy 2 N xy 2z 3 x 2y 3z 4 3 x 2y 2 xy 2 4 X 2y xy '- 4y x 3 X 3 2x 2y xy 4x Xy の とき x 2y 3 x 3y 4 X 2y 4 xy 3 metode grafik