Question

find the value for the undefined fraction?
w+7 / w^2+5w+4

Answer 1

factor ^_^ and you'll get :

\[= (w+7)/(w+1)(w+4)\]

the zeros again are in the denominator :

w= -1 and w = -4

^_^

Answer 2

when you substitute these zeros in place of w in the denominator , they make the function undefined, because anything/0 = is an undefined form.

Answer 3

did you understand the story behind it? :)