Here is the graph
https://www.desmos.com/calculator/7r6zlevfrv
Using the graph can you see what the answer is?
You also need to be able to work these out without graphing first (it is good to graph afterwards for checking you answer)
X^2 is always going to be positive.
x can't be 1
Do you know how to use calculus Tom?
If so it is easy just to differentiate and then set y'=0 to find the stationary points etc.