Решить по формулы Виета x2−20x+51=0 x1+x2 x1⋅x2 x1 х2 x2-9x-52=0 x1+x2 x1⋅x2 x1 х2
X1 + x2 = -b x1 * x2 = c x1 + x2 = 20 x1= 17 x2 = 3 x1 * x2 = 51 x1 + x2 = - b x1 * x2 = c x1 + x2 = 9 x1 * x2 = -52 x1=13 x2=-4