Question

решите пожалуйста !!! Б

Answer 1

$\left \{ {y=-x^2+2\atop y=-x}\right.\\-x^2+2=-x\\-x^2+x+2=0\\D=1+8=9\\\left.\begin{array}{cc}x_1=\frac{-1+\sqrt 9}{-2}=-1&x_2=\frac{-1-\sqrt 9}{-2}=2 \end{array}\right.$