Udfordring

q, left parenthesis, x, right parenthesis, equals, start fraction, x, start superscript, 2, end superscript, plus, 10, x, plus, 21, divided by, x, start superscript, 2, end superscript, minus, 10, x, plus, 16, end fraction
At each of the following values of x, select whether q has a zero, a vertical asymptote, or a removable discontinuity.
 
Nul
Vertical Asymptote
Removable Discontinuity
x, equals, minus, 7
x, equals, minus, 3
x, equals, 2
x, equals, 8
Do 4 problems