Explain this

@Wisecrack, is that you?

@Root No, but I wish I'd thought of this.

x² and √x aren't inverse operations, because for every x=y² there are two potential y-s, and √x is defined to be the positive one. You can't just take the square root of both sides, first you have to assert that neither can be negative.

The result of sqrt(x^2) isn't x, but it's |x|.

My calculus teacher kept repeating it all the time.

Wolfram Alpha proof:
https://wolframalpha.com/input/...

So sqrt((-1)^2) equals to |-1|, which is 1

Let me put it more succinctly:
Baldi is coming for you.

@Root can hear the ruler smacking

I was going to make a JavaScript joke, but since some people are taking this seriously I'll just quietly back out of the comments now...