Question 151319
area of flower bed is 45 ft^2 (9*5) __ area of center is 21 ft^2 (45-24)


let x="width of border" __ so center length is 9-2x and center width is 5-2x


(9-2x)(5-2x)=21 __ FOILing __ 45-28x+4x^2=21 __ subtracting 21 __ 4x^2-28x+24=0 __ dividing by 4 __ x^2-7x+6=0


factoring __ (x-6)(x-1)=0


x-6=0 __ x=6 __ greater than width of entire bed, so not realistic


x-1=0 __ x=1