Question: x2 + 4x - 21 . If a limit does not exist then answer +oo, -oo, or DNE (whichever is correct). Make sure to check

 x2 + 4x - 21 . If a limit does not

exist then answer +oo, -oo, or DNE (whichever is correct). Make sure

x2 + 4x - 21 . If a limit does not exist then answer +oo, -oo, or DNE (whichever is correct). Make sure to check that L'Hopital's rule applies before using it. Also, whenever you apply L'Hopitals rule, indicate that you are using it. 1. Calculate the indicated limit. lim - 2-+3 x2 - 7x + 12

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