Question

How do you find the limit of `3x^3-5x` as `x->4`?

Answer 1

`172`

Explanation:

All you have to do is to `color (red) (plug)` in the value of `x`

So, `lim_(x->4) 3x^3-5x=3(4)^3 -5(4)=192-20=172`

Hope this helps :)