Calculate sqrt(60x)*sqrt(12x)*sqrt(63x)*sqrt(42x). Express your answer in simplest radical form in terms of x. Note: When entering a square root with more than one character, you must use parentheses or brackets. For example, you should enter sqrt(14) as "sqrt(14)" or "sqrt{14}".
+36916 = sqrt 2*2 * 3*5 * 2*2 * 3 * 7*3*3 * 7*3*2 x4
= x2 sqrt 2^5 3^5 * 5 * 7^2
= 252x2 sqrt( 30)
