Найдите сумму и произведение корней уравнения:
а) $x^2 - 37x + 27 = 0$;
б) $y^2 + 41y - 371 = 0$;
в) $x^2 - 210x = 0$;
г) $y^2 - 19 = 0$;
д) $2x^2 - 9x - 10 = 0$;
е) $5x^2 + 12x + 7 = 0$;
ж) $-z^2 + z = 0$;
з) $3x^2 - 10 = 0$.
$x^2 - 37x + 27 = 0$
$x_1 + x_2 = 37$;
$x_1x_2 = 27$.
$y^2 + 41y - 371 = 0$
$y_1 + y_2 = -41$;
$y_1y_2 = -371$.
$x^2 - 210x = 0$
$x_1 + x_2 = 210$;
$x_1x_2 = 0$.
$y^2 - 19 = 0$
$y_1 + y_2 = 0$;
$y_1y_2 = 19$.
$2x^2 - 9x - 10 = 0$
$x_1 + x_2 = \frac{9}{2} = 4,5$;
$x_1x_2 = -5$.
$5x^2 + 12x + 7 = 0$
$x_1 + x_2 = -\frac{12}{5} = -2,4$;
$x_1x_2 = \frac{7}{5} = 1,4$.
$-z^2 + z = 0$
$z_1 + z_2 = 1$;
$z_1z_2 = 0$.
$3x^2 - 10 = 0$
$x_1 + x_2 = 0$;
$x_1x_2 = -\frac{10}{3} = -3\frac{1}{3}$.
Пожауйста, оцените решение
