Factorise:- x²-y²-2y-1
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x^2-(y^2+2y+1)
x^2-[y+1]^2 a^2-b^2 = (a+b ) ( a-b)
[x-(y+1)] [x+(y+1]
(x-y-1) (x+y+1) answer :)
sanjuraj327p87kk6:
yup it's correct
lakin 2y kaha gaya??
muje yahi samaj mein ny aaya
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