Answer: The correct answers are the 2nd and 4th choice.
For the zero product property to work, you must have factors that are multiplying together to get a total of zero.
The second one could be factored to form: 3x(x - 2) = 0. Now, we have the factor 3x and (x-2) that are being multiplied together to equal 0.
The fourth one is already in the correct form for you.
