Answer:
The first answer choice is the correct one.
Step-by-step explanation:
√(120x) can be rewritten as √(4*30*x). I have chosen these factors because 4 is a perfect square. This √(4*30*x) can be simplified further, leading to
√4 * √(30x), which in turn equals 2√(30x),
The correct answer is the first one of the four given.
