Answer: √108
Explanation:
√108
Factor out the term with the exponent, which is a multiple of 2.
√6² × 3
Find the root of the product, which is equal to the product of the roots of each factor.
√6²√3
Next, simplify the root by reducing the index of the radical and the exponent with 2.
6√3
In this case, 6 would be an integer taking the place of k.
Note: There can be multiple answers to a problem like this, such as...
√48 = 4√3