subsitute 2808=LW subsitute 6+2W for L 2808=(6+2W)(W) 2808=2W²+6W divide both sides by 2 1404=W²+3W minus 1404 from both sides 0=W+3W-1404 farctor, what 2 numbers multiply to get -1404 and add to get 3 -36 and 39 0=(W-36)(W+39) set each to zero
0=W-36 36=W
0=W+39 -39=W false, can't have negative dimentions
