Question

Which of the following expressions is a common factor when the expressions x2 – 9 and x2 – 5x + 6 are factored?

A.
x + 3

B.
x - 3

C.
x - 2

D.
x2

Answer 1

B

Explanation:

Start by factoring out both equations:

`x^2-9 = (x-3)(x+3)\\x^2-5x+6 (x-3)(x-2)`

Both equations have (x-3). Therefore. your answer is B.