7 positive minus one positive

7-1 = 6

Step-by-step explanation:

7 positive means +7

1 positive means +1

+7 minus +1

7-1 = 6

Lets make it clear: You would have a positive answer when the value you are looking for has to be a positive number. On the other hand you would have a positive and a negative answer when you take the square root of something that doesn't have to be positive. it could be either because when a negative number is squared it becomes positive and when a positive number is squared it stays positive as well.