When a.b is a rational number, the equation |ab|=—ab holds?

When a.b is a rational number, the equation |ab|=—ab holds?

A, b-positive and negative or one of them is 0

A, b - positive - negative or one of them is 0

Any power of a positive number is (). An odd power of a negative number is (). An even power is () The absolute values are equal, and the two numbers of the sign () are represented on the number axis: the two points of opposite numbers are respectively located at the origin (), and the distance from the far point (), and the number 0 is neither a positive number nor a negative number. Any power of a positive number is (). An odd power of a negative number is (). An even power is () The absolute values are equal, and the two numbers of the sign () are represented on the number axis: the two points of opposite numbers are respectively located at the origin (), and the distance from the remote point (), and the number 0 is neither a positive number nor a negative number.

Any power of a positive number is (positive number). Odd power of a negative number is (negative number). Even power is (positive number)
Two numbers whose absolute values are equal and whose signs are (opposite), which are represented on the number axis: two points of opposite numbers are respectively located at the origin (both sides) and the distance from the distant point (equal), and the number 0 is neither a positive number nor a negative number