Решите уравнения x2+8x+12=0 x2=-8x

Question

Решите уравнения
x2+8x+12=0
x2=-8x

Answer 1

Х^2 + 8х + 12 = 0
D = 64 - 4 * 12 = 64 - 48 = 16 = 4^2
x1 = -8 - 4 / 2 = -6
x2 = -8 + 4 / 2 = -2
Ответ: -6; -2

х^2 = -8х
х^2 + 8х = 0
х(х+8) = 0
х = -8
х = 0
Ответ: -8; 0