X 2 2y )( x 2 3y July 8, 2019 16 32 64 128 X 2y 2 x 3y 3 X 2 )( 3y 1 )-( x 2 )( 2y 7 X 2 2y 2 x 3y 5 0 X 2y 2 x 3y 7 X 2y 2 x 3y 7 by substitution method X 2 3 2y x 2y 2 3y 2 0 X 2y )( x 2 2xy 3y 2 4x 2y 3xy x 2 )(- x 3y 2
