Question

Evaluate the limit, if it exists

lim h-0 ((1/(x+h)^2 - 1/x^2 ))/ h

Answer 1

Try combining top fractions. And get rid of the compound fraction.
Unless you already know derivatives then we can actually skip this part.

Answer 2

so a common denominator for the top fractions? do i expand the (x+h)^2

Answer 3

You will need to.

Answer 4

so x^2 + 2xh + h^2, what would be the common denominator

Answer 5

x^2(x+h)^2