√40
√40x4y8
√x4y8 = x4 ÷ 2y8 ÷ 2 = x2y4
Our leftover piece under the radical becomes 2√10
Our final answer is the factored out piece and the expression under the radical
2x2y4√10
The highest factor with an integer square root is 4
Use the product combo √40 = √4√10
Evaluating square roots, we see that √4 = 2
√40 = 2√10