Question

9- y2 + 2xy - x2 factorise​

Answer 1

Answer:

9-(x²-2xy+y²)

9-(x-y)²

3²-(x-y)²

this is in the form a²-b²

so the factors are (3+x-y) (3-x+y)

Step-by-step explanation:

hope it's help you my dear friend ok bye