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Rational function points of discontinuity

h(x)=x2+8x+16x2+6x+8h(x)=\dfrac{x^2+8x+16}{x^2+6x+8}
At each of the following values of xx, select whether hh has a zero, a vertical asymptote, or a removable discontinuity.
 
Zero
Vertical Asymptote
Removable Discontinuity
x=4x=-4
x=2x=-2