Question

19. The sum of two expressions is 19x+y - 4xy + 15.
If one expression is xy2 + 3xy - 9, find the other.​

Answer 1

Answer:

19x-9xy+y+24

Step-by-step explanation:

Let the other expression be z

2xy+3xy-9 + z = 19x+y-4xy+15

z=19x+y-4xy+15-2xy-3xy+9

z=19x-9xy+y+24