X^2 + 8xy + y^2

completely factorize this.

i think it is not possible to solve there is an answer for this in the book and it says (4x + y )^2

guide me how : )

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?