Question

The first word is which​

Answer 1

Your answer would be B

Answer 2

B. 1 / (x^2 - 4x + 3).

Explanation:

(x + 3)/ (x^2 - 2x - 3) ÷ (x^2 + 2x - 3) / (x + 1)

= (x + 3) / (x^2 - 2x - 3) * (x + 1) / (x^2 + 2x - 3)

(x + 3) (x + 1)

= --------------- * -----------------

(x - 3)(x + 1) (x + 3)(x - 1)

The (x + 3)'s and (x + 1)'s cancel out:-

= 1 / (x - 3)(x - 1)

= 1 / (x^2 - 4x + 3)