Surds

UK Secondary (7-11)

Evaluate expressions involving numerical roots

Which of the following is true for a principal square root?

None of these statements are true.

A

There are two principal square roots of any positive number.

B

The values of principal square roots are always positive.

C

It is only possible to find the principal square root of a positive number.

D

None of these statements are true.

A

There are two principal square roots of any positive number.

B

The values of principal square roots are always positive.

C

It is only possible to find the principal square root of a positive number.

D

Easy

Less than a minute

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