Помогите пожалуйста
5x^2 - 8x - 10 = 0 D = 64 + 4*50 = 264 √D = √264 = 2√66 x1 = (8 + 2√66)/10 = 4/5 + √66/5 x2 = (8 - 2√66)/10 = 4/5 - √66/5