Enter radical expression

Simplify √243.

Checking square roots, we see that 15² = 225 and 16² = 256.
Our answer is not an integer.
Simplify it into the product of an integer and a radical.

List each product combo of 243
checking for integer square root values below:
√243 = √1√243
√243 = √3√81
√243 = √9√27

From that list, the highest factor that has an integer square root is 81.
Therefore, we use the product combo √243 = √81√3
Evaluating square roots, we see that √81 = 9

Simplify our product

Therefore, we can factor out 9 from the radical, and leave 3 under the radical