Question

The excluded values of a rational expression are 2 and 5. Which of the following could be this expression?

Answer 1

Answer:

It's the last  choice:  (x + 5) / (x^2 - 7x + 10).

Step-by-step explanation:

x^2 - 7x + 10

= (x - 5)(x - 2)

If these are  a denominator of a rational expression then  2 and 5 will be excluded values.

This is because x = 5 or x = 2 makes the denominator = zero and the function  then becomes undefined.

So the answer is (x + 5) / (x^2 - 7x + 10).

Answer 2

Answer: The answer should be B.

Step-by-step explanation:

The trinomial equation should go on top

5 x 2 = 10, & 5 + 2 = 7