Question

What number(s) should be excluded as values of x in the polynomial?
x+2/x^2-4

Answer 1

2 and -2
coz the denominator cannot be zero. otherwise, the fraction does not exist

Answer 2

solve
\[x^2-4=0\] for x, exclude those values

Answer 3

A. 2
B. -2
C. 2 and -2
D. No exclusions