Question

Решите уравнение : x²+7x+6=0

Answer 1

D= 7^2 - 4*1*6 = 49-24 = 25 (rjhtym 25 = 5)
x1 = -7+5/2 = -1
x2 = -7-5/2 = 6

Answer 2

х2= - 6

Answer 3

ой, да. там x2 = -6

Answer 4

D=7*7-4*6=49-24=25 X=-12/2=-6 X=-2/2=-1

Answer 5

- 6