Factor: (please tell me steps)
9x^(4)+21x^(3)-9x^(2)-21x

Leo is going to use a random number generator 4 0 0 400 times. each time he uses it, he will get a 1 , 2 , 3 , 4 , 1,2,3,4, or 5 5. what is the best prediction for the number of times that leo will get an odd number?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

What is the slope of the line that contains the points (-2,1) and (0,-3)