Question

система уравнений 4х+у=-3 и -у-х^2=6

Answer 1

$left { {{4x+y=-3} atop {-y-x^2=6}} right.$
$x^{2} -4x+3=0$
$x_{1,2}= frac{4+-2}{2}=3;1$
y=-4x-3
$y_1=-15;y_2=-7$