Составьте квадратное уравнение по его корням. -1 ; 3 (). -4 ; 0.

x1 = -1; x2 = 3.c =x1 * x2 = - 1 * 3 = - 3; - b = x1 + x2 = - 1 + 3 = 2;  b = - 2x^2 + b*x + c = 0;x^2 - 2 x - 3 = 0.2) x1 = - 4; x2 = 0;c = x1 * x2 = - 4 * 0 = 0;- b = x1 + x2 = - 4 + 0 = - 4;  b = 4  x^2 + b* x + c = 0;x^2 + 4x = 0