Question

factorize x²-y²-6y-9​

Answer 1

Answer:

x²-y²-6y-9

x²- (y² + 6y + 9)

(x)² - (y + 3)²                 [x²+2xy+y² = (x+y)²]

[x-(y+3)] [x+(y+3)]          [ x²-y² = (x+y)(x-y) ]

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

Answer 2

Answer:

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

Step-by-step explanation:

x²-(y²+6y+9)

using the identity (a+b)²= (a²+b²+2ab)

x²-(y+3)²

using the identity a²-b²= (a+b)(a-b)

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