Question

Select which of the following are surds.

a. √17
b. √36
c. √100
d. √15
e. √30

Answer 1

a , d , e are surds

Explanation:

When we cannot simplify a number to remove a square root or cube root, etc , then it is a surd

`√(2)` cannot be simplified further, then it is a surd

`√(4)` is 2 and is not a surd

a

`√(17)` ← is a surd

b

`√(36)` = 6 ← is not a surd

c

`√(100)` = 10 ← is not a surd

d

`√(15)` ← is a surd

e

`√(30)` ← is a surd