6. What value will make the equation true? -21-n= -1 1/2"

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

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

Two numbers have a sum of -19. one number is x. what expression represents the other number?