Question

What is the factor of x2-1​

Answer 1

Answer:

(x+1) (x-1)

Step-by-step explanation:

a2−b2=(a+b)(a−b) a 2 - b 2 = ( a + b ) ( a - b ) where a=x and b=1 .

Answer 2

a²-b²=(a+b)(a-b)

and since 1=1²

x²-1=(x+1)(x-1)