The area of a rectangular fountain is (x^2+12+20) square feet. A 2-foot walkway is built around the fountain. Find the dimensions of the outside border of the walkway

Area=legnth times width

factor

what 2 numbes multiply to 20 and add to 12

10 and 2

(x+2) (x+10)

2 foot walkway is increase legnth and width by 2

area=LW

area = (x+2) (x+10)

increase each by 2

area = (x+4) (x+12)

the outside border is x+4 by x+12