3x^2+5x-2=0 решите уравнение
3x² + 5x - 2 = 0 D = b² - 4ac = 5² - 4×3×(-2) = 25 + 24 = 49 x1 = = = x2 = = 3(x - )(x + 2) = 0 (x - )(x + 2) = 0 x1 = x2 = -2