Another quick easy limits question

[Wahamuka]

What did I do wrong. I’m so confused

The answer is supposed to be -2/x^3

 

[Harry_the_cat]

You wrote \(\displaystyle (x+h)^2 = x^2 + xh + h^2\). You might want to rethink that!

 

[Wahamuka]

0_0 Mother of god. *facepalms* thanks

 

[Harry_the_cat]