Question

Решите систему 
$left { {{y-5x=-8} atop {y-x^2=-2}} right.$

Answer 1

$y-5x=-8\ y-x^2=-2\ \ y=5x-8\ y=x^2-2\ \ 5x-8=x^2-2\ x^2-5x+6=0\ D=25-4*1*6=1\ x_{1}=frac{5+1}{2}=3\ x_{2}=frac{5-1}{2}=2\ y_{1}=7\ y_{2}=2$