“The absolute value of a real number is defined as the principal square root of the square of number.” This just means the absolute value of a real number is the square root of a squared number ex: or Radicand after squaring and then square rooting (the absolute value of a real number) must be positive so you can find the absolute value of a negative or positive number.

EXP: |-6|=6

|6|=6

|7-2|=5 (if there’s an equation is in the brackets, you must solve before finding the absolute value)