Hard
Simplify: √(160) is equal to which surd form?
Explanation
Explanation
We look for the largest perfect square factor of 160. Since 160 = 4² × 10, we can pull 4² out of the square root as 4. That leaves √10 inside, so √160 = 4√10.
PRO TIP
Re-check your working by substituting the answer back into the original question.