Question

Anyone know if this is right?

Answer 1

n² - 2n + 1

Explanation:

You are to square;

(n - 1)²

This is the same as,

(n - 1)(n - 1)

Multiplying the above we get;

n² - n - n + 1

Finally,

n² - 2n + 1

Answer 2

(n-1)^2 = n^2 +1 -2n so the third option form top down