Question

What is the limit?

Answer 1

10

Explanation:

Easiest way to do this would be by cancelling common factors:

`lim_(x->3)(x^2+4x-21)/(x-3)`

`=lim_(x->3)((x-3)(x+7))/(x-3)`

`=lim_(x->3)(x+7)`

`=10`