Are there numbers that are either negative or positive?

0 is neither negative nor positive.

>>7694525
0 is not a number.

>>7694477
Kill yourself

>>7694477
when one says that ±x is the root of y, what one really means is that x is a root of y and -x is also a root of y.

>>7694552
but... ±x can be also understood as a new type of number that can be either positive or negative?
just asking...

>>7694587
No.

>>7694590
Why?

>>7694604
not well defined in the sense of a real number
of course you can define new numbers like this to be equivalence classes of cauchy sequences converging to x and mutliplying (-1)^n, but why would you?

>>7694547

I have made a decision upon reading this post. I will never ever venture onto /sci/ again.

What the fuck mate.

>>7694629
See you tomorrow.
Don't forget to sage.