(5x+30)(4x-6)(4,8-0,8)=0
(5x + 30) (4x - 6) (4,8 - 0,8) = 0 4 (5x + 30) (4x - 6) = 0 5x +30 = 0 5x = -30 x = -30 ÷ 5 x = -6 4x - 6 = 0 4x = 6 x = 6 ÷ 4 x = 1,5 Ответ: -6, 1,5