Question

Which function has a removable discontinuity?

a. h(x)=(x²-x-2)/(x+1)

b. g(x)=(2x-1)/(x)

c. f(x)=(5x)/(1-x²)

d. p(x)=(x)/(x²-x-2)

Answer 1

a.

x^2 -x-2 = (x+1)(x-2)
the (x+1) cancels, leaving a discontinuity at x =-1

Answer 2

A either .