2. 8- X6 + 9x2 - 2x
polynomial i need help

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Place the following steps in order to complete the square and solve the quadratic equation,

Write the expression 7x^3-28xy^2 as the product of 3 factors