Question

using the identity (x+a) (x+b) =x²+ (a+b)x+ab ,find the following products b. (y+1) (y-1)​

Answer 1

Answer:

using the identity (x+a) (x+b) =x²+ (a+b)x+ab ,find the following products b. (y+1) (y-1)

Answer 2

Answer:

y²-1

thank you very much ...