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20 votes
20 votes
I don’t know how to answer this one. Please help ^^’

I don’t know how to answer this one. Please help ^^’-example-1
User Slembcke
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1 Answer

8 votes
8 votes

Solution

For this case we have the following function given:


f(x)=(x^2-3x-28)/(x+4)=((x-7)(x+4))/(x+4)=x-7

and we can see the we cant divide by 0 when x= -4 so then the discontinuity is removable at x= -4 and the answer would be:

(-4,-11)

Since -4-7= -11

User Yoape
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