Д = 7*2 - 4*1* (-44) = 49+176 = 225х1= (-7- 15) : 2*1 = -22:2 = -11х2 = (-7+15) :2*1 = 8:2 = 4
х*2+7х-44=0 a= 1 b = 7 c = -44
-7 +- √49+ 176
x=
2
-7 +- √225
-7 +- 15
x= -11
x = 4
ответ : {-11, 4 }
Д = 7*2 - 4*1* (-44) = 49+176 = 225
х1= (-7- 15) : 2*1 = -22:2 = -11
х2 = (-7+15) :2*1 = 8:2 = 4
х*2+7х-44=0 a= 1 b = 7 c = -44
-7 +- √49+ 176
x=
2
-7 +- √225
x=
2
-7 +- 15
x=
2
x= -11
x = 4
ответ : {-11, 4 }