Answer:
Vertical asymptote at [tex]x= -9 \ and \ x=-4[/tex]
Step-by-step explanation:
Identify the vertical asymptotes of [tex]\frac{x-4}{x^2+13x+36}[/tex]
To find vertical asymptote we set the denominator =0 and solve for x
Set [tex]x^2+13x+36=0[/tex] and solve for x
now we factor x^2 +13x+36
Product is 36 and sum is 13
[tex]9 \cdot 4=36[/tex]
[tex]9+4=13[/tex]
so the equation becomes
[tex](x+9)(x+4)=0[/tex]
Now set each factor=0 and solve for x
[tex]x+9=0, x=-9[/tex]
[tex]x+4=0, x=-4[/tex]
Vertical asymptote at [tex]x= -9 \ and \ x=-4[/tex]