Okay, here it is. You can do it in any of these ways :-

1:-

So we have multiplied and divided by x

now using this

(You can try this yourself. Just apply L'hospital and you will get it)

we get the limit as 1*x as x->0

(Where f(x) = x^2)

so it becomes0

2:- Just Apply L'hospital as both the numerator and denominator are tending to zero.

You will get

which tends to0as x-> 0

Spare me for my poor Latex. I am trying to learn.

cheers !