-x²-6x+19=0
x²+6x-19=0
D=b²-4ac=36-(-76)=112
x₁=-b+√D/2а=(-6+4√7)/2=-3+2√7
x₂=-b-√D/2а=(-6-4√7)/2=-3-2√7
ответ: x₁=-3+2√7, x₂=-3-2√7
-x²-6x+19=0
x²+6x-19=0
D=b²-4ac=36-(-76)=112
x₁=-b+√D/2а=(-6+4√7)/2=-3+2√7
x₂=-b-√D/2а=(-6-4√7)/2=-3-2√7
ответ: x₁=-3+2√7, x₂=-3-2√7