How to express the opposite number of rational number A? What about rational [A-B]? How to express the opposite number of rational number A? What about rational numbers?

How to express the opposite number of rational number A? What about rational [A-B]? How to express the opposite number of rational number A? What about rational numbers?

The opposite is a minus sign
So the opposite of A is -A
The opposite of (A-B) is -(A-B)= B-A

The opposite is a minus sign in front
So the opposite of A is - A
The opposite of (A-B) is -(A-B)= B-A

Is the product of a rational number and its opposite number?

The product of a rational number and its inverse is the inverse of the square of the number

The product of a rational number and its opposite number is the opposite of the square of the number