Hello : let : y the length and : x <span>the width y = 2x +3.....(1) xy = 77 .....(2) by (1) subsct : y i n (2) x(2x+3) = 77 2x²+3x -77 = 0 the descrimnent : b²-4ac ... a =2 b= 3 c = -77 3²-4(2)(-77) = 625 = 25² x1 = (-3-25)/4 negatif refused x2 = (-3+25)/4 =22/4 = 11/2 x= 5.5 y = 2(5.5) +3 =14</span>