Or

# Which function is (x-1) a real root?

Viewed 985166 times
1
Which function is (x-1) a real root?

2

D

Step-by-step explanation:

According to the Factor Theorem:

In order for a factor in the form of to be a root for a function , must be 0.

Our factor is .

Therefore, .

So, we will evaluate for all the choices.

Doing so, we can see that, starting from the top, we have:

The choice that yields 0 as an answer is D.

So, the function for which is a real root is choice D.

15.5k 3 10 26