Which of the following is not a like surd?
Show answer & explanation
Correct answer: C
Explanation
In like surds, the surd part (the number inside the √) is the same.
2√5 is a like surd.
−3√5 is a like surd.
4√34 (the surd is √34, which is different)
(1/2)√5 is a like surd.
Therefore, 4√34 is not a like surd.