The area of a rectangle is calculated by multiplying the length by the width. If the area of a rectangle is x 2 + 5 x + 6 , which of the following could be the length of the rectangle?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?