Question #N558

Which of the following is equivalent to $x^2 - 2x + 1$?
A. (x - 1)(x + 1)
B. (x - 1)^2
C. (x + 1)^2
D. (x - 2)(x + 1)

Correct Answer is: B

The expression $x^2 - 2x + 1$ is a perfect square trinomial, which can be factored as $(x - 1)^2$. This is because the first term is the square of $x$, the last term is the square of 1, and the middle term is twice the product of $x$ and 1.