Introduction to Radicals Quiz

What is the term used for the number under the radical sign?

• Index

• Radicand

• Radical Sign

• Exponent

If the index of a radical is not written, what is it assumed to be?

• Three

• One

• Four

• Two

What is the principal square root of 49?

• 14

• 7

• -14

• -7

Which of the following is an irrational number?

• Square root of 25

• Cube root of 8

• Square root of 7

• Square root of 16

What is the cube root of -8?

• 2

• -2

• 4

• -4

Which of the following is a perfect square?

• 36

• 45

• 27

• 18

What is the cube of 3?

• 36

• 27

• 18

• 9

What is the absolute value of the square root of x squared?

• |x|

• -x

• x^2

• x

If n is odd, what is the nth root of a to the power of n?

• -a

• |a|

• a^2

• a

For an even index, what is the nth root of a to the power of n?

• |a|

• -a

• a

• a^2