Question

решите систему
x-3y=1
x*y=14

Answer 1

$left { {{x-3y= 1} atop {x*y=14}} right.  left { {{x=1+3y} atop {x*y=14}} right.  (1+3y)y=14;  y1=2;  y2=frac{-7}{3};  x1=7;  x2=-6;  (x1,y1)=(7,2) (x2,y2)= (-6, frac{-7}{3}  left { {{7-3*2=1} atop {7*2=14}} right.  left { {-6-3*(frac{-7}{3} } atop {-6*(frac{-7}{3} }} right.  left { {{1=1} atop {14=14}} right.  left { {{1=1} atop {14=14}} right.  (x1,y1)=(7,2) (x2,y2)=(-6, frac{-7}{3}$