Question

List the critical numbers of the following function in increasing order. Enter N in any blank that you don't need to use.
f(x) = (6x+6)/(5x^2+5x+5)

Answer 1

x = -1 is a critical number arising from the numerator
(-1,0) is the x-intercept

for 5x^2 + 5x + 5 , nothing to see here.

I guess, we could let x = 0, to get y-intercepts which can be done mentally
y = 6/5

Answer 2

List the critical numbers of the following function in increasing order. Enter N in any blank you don't need