Question

What does that mean please dont spam in answer if you dont know humble request !!!​

Answer 1

Answer:

this is a sign used in math that represents the answer

meaning that there are two answers is negative and the other is positive

for example  

±5 it is also equal to positive five (5) and negative five (-5)

Answer 2

It means that a number with which it is used can be either positive or negative.

hope it helps..