(14x^3-7x^2+21x)/(7x) What are the limits?

Question

I need to know what x cannot equal to.

Answer 1

2x^2 -x +3 = (2x+3)(x-1)

x crosses the x axis twice, at (1,0) and (-3/2,0)

It can take on any real value, except zero. x=0 makes the denominator 0

the curve has a discontinuity at x=0, a "hole" in the curve. x cannot = 0