Finding Unknowns in Radicals

Question 1: In the expression square root(35x), for which value of x should the expression be further simplified?

Question 2: In the expression square root(10x), for which value of x should the expression be further simplified?

Question 3: Which value of x makes 3square root(x) =18square root(2)?

Question 4: What is the smallest whole number x such that square root(18x) is a whole number?

Question 5: For which value of x is square root(18x)/square root(3)= 2square root(6)