Question

x+y/a²-6a+9 ×a-3/x²-y² ???????
pfvvv é urgente ​

Answer 1

x+y/a²-6a+9 × a-3/x²-y² =

x+y/x²-y2 × a-3/a²-6a+9

x+y/(x+y)(x-y) × a-3/(a-3)²

1/x-y × 1/a-3