Решите уравнение -x^2-8х-14=0

-x²-8x-14=0|*(-1) x²+8x+14=0 D=b²-4ac=64-56=8 [latex] \sqrt{D}=2 \sqrt{2} [/latex] [latex] x_{1}= \frac{-b- \sqrt{D}}{2a}= \frac{-8-2\sqrt{2}}{2}= \frac{2*(-4-\sqrt{2)}}{2}=-4-\sqrt{2} \\ \\ x_{2}= \frac{-b+\sqrt{D}}{2a}= \frac{-8+2\sqrt{2}}{2}= \frac{2*(-4+\sqrt{2)}}{2}=-4+\sqrt{2}[/latex]