Question

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

Answer 1

\[x+2\div x^2-4\]

Answer 2

so, 2x/x^2 =0 + 4= 4
so, x= 4

Answer 3

x+2/x^2-4
here if we take the value of x= 2,
2+2/(2)^2-4 = 4/0 =undefined
if x=-2, then -2 +2/(-2)^2-4 = 0/0=not defined
so the values -2 and 2 has to be excluded while considering the value of x