Can someone help me this question is different from the others

Which is the completely factored from of xy^3-x^3y

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Which shows the graph of the solution set of 3y – 2x > –18?