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Radical
The symbol that represents the square root, cube root, 4th root, ect.
nth Root
The unknown number and/or variable that when multiplied by itself n times equals the radicand
Radicand
The number, variable or expression underneath a radical.
Perfect Square
Numbers whose square root values are integers.
Radical expression
A mathematical phrase that contains a radical.
Irrational numbers
Numbers that cannot be written as a fraction. (Does not repeat, does not terminate)
Rational numbers…
Are whole numbers/integers
Irrational numbers…
Can only be estimated as decimals, and do not terminate
Imaginary numbers…
Are impossible, like the square root of a negative number