б) 24^2-23^2 = (24+23)(24-23) = 471 = 47г) 87^2-13^2 = (87+13)(87-13) = 10074 = 7400е) 37^2-2377+49 = (37-7)^2 = 30^2 = 900з) 53^2+53*34+17^2 = (53+17)^2 = 70^2 = 4900
б) 24^2-23^2 = (24+23)(24-23) = 471 = 47
г) 87^2-13^2 = (87+13)(87-13) = 10074 = 7400
е) 37^2-2377+49 = (37-7)^2 = 30^2 = 900
з) 53^2+53*34+17^2 = (53+17)^2 = 70^2 = 4900