What is the answer for a and b ?

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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?