Question

using proper identities, factories the following.​

Answer 1

Answer:

(x-y+3)(x+y-3)

Step-by-step explanation:

x²-y²+6y+9

=x²-(y-6y+9)

=x²-(y-3)² {(a-b)²=a²-2ab+b²)}

={x-(y-3)}{x+(y-3)} [a²-b²=(a+b)(a-b)]

=(x-y+3)(x+y-3)

Thus, x²-y²+6y-9=(x-y+3)(x+y-3)