Easy
Simplify: √(441) is equal to which surd form?
Explanation
Explanation
We look for the largest perfect square factor of 441. Since 441 = 7² × 9, we can pull 7² out of the square root as 7. That leaves √9 inside, so √441 = 7√9.
PRO TIP
Re-check your working by substituting the answer back into the original question.