Question

How do you find the two solutions to the `sqrt(145)`?

Answer 1

Watch out: the square root of a number `x` is a unique number, defined as the positive number `y` such that `y^2=x`; and in that case, we say that `\sqrt{x}=y`.

So, the square root of `145` is a unique number. If you speak of solutions, you are referring to the equation `x^2-145=0`, which solutions are `\pm\sqrt{145}`.