Answer:

C.principal root

• Every nonnegative real number x has a unique nonnegative square root, called the principal square root, which is denoted by where the symbol is called the radical sign or radix.

Answer:

B

Step-by-step explanation:

Because an Irrational Number is a real number that cannot be written as a simple fraction. Irrational means not Rational. rational vs irrational.