Question

Which of the following expressions is equal to x²-1 ?
____
x-1
A.x + 1
B.x - 1
C.1
D.-1​

Answer 1

Answer:

answer is b. x-1

Step-by-step explanation:

x²-1 can be written as

x²-1²

(x-1)(x-1)

so right answer is b