Please help please and thank you

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

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.