Question

answer this question please!!

Answer 1

Answer:

Step-by-step explanation:

A²-B²=(A+B)(A-B)

Let A= x², B =(x+1)

So we get,

X²-(x+1)²

X²-(x²+2x+1)

x²-x²-2x-1

-(2x+1)

So when x=-1

-(2(-1)+1)

2-1

=1