Найти дискреминант Д ,x1 и x2 номер 652

a) 5x² - 3x = 6x - 4     5x² - 3x - 6x + 4 =0     5x² - 9x + 4 = 0 D = b² - 4ac =81 - 80 = 1 x1 = [latex] \frac{-b + \sqrt{D}}{2a} [/latex]  = [latex] \frac{9 + 1}{10} [/latex] = [latex] \frac{10}{10} [/latex] = 1 x2 = [latex]\frac{-b -\sqrt{D}}{2a}[/latex] = [latex] \frac{9-1}{10} [/latex]= [latex] \frac{8}{10} [/latex]=[latex] \frac{4}{5} [/latex]