How do you simplify the radical expression 72?

2 Answers
Mar 20, 2017

72=36×26=36×2=6×2

Explanation:

This takes advantage of the relation

a×b=a×b

Look for a factor in the original value that is a perfect square (4, 9, 16, 25, 36, etc.)

Mar 20, 2017

62

Explanation:

(I think you meant as a simplified radical, so that's what I'm going to answer.)
72 can also be thought of as 362, or 662.
Using the rule that ab=ab, you end up with 662.
This can also be expressed as 622.
The square root and square cancel, leaving us with the simplified radical of 62.