Question

resolve into factors

1-x²-y²+2xy

class 10

guys plz solve this question exercise 5.2 of maths​

Answer 1

Answer:

-(x-y+1)(x-y-1)

Step-by-step explanation:

$1 - x {}^{2} - {y}^{2} + 2xy \\ - ( {x}^{2} + {y}^{2} - 2xy - {1}^{2} ) \\ - ( {x - y}^{2} - {1}^{2} ) \\ - (x - y + 1)(x - y - 1)$