Question

Let f(x) = x^2 - 5x +4 / x-1

Answer 1

C. 3

Step-by-step explanation:

You cannot divide by 0.

So plug in g(x) into f(x) in the denominator. The numerator is irrelevant so you don't need to worry about it.

Solve for what value of x will give you a denominator of 0.

I just eyeballed this and found that x=3 give you a denominator of 0.

or you can just plug in and check all the answer choice.