Решить систему уравнений x^2-y=28 x-y=2

y=x-2 x²-x+2=28 x²-x-26=0 D=1+676=677 x1=(1-√677)/2⇒y1=(1-√677)/2-2=(-3-√677)/2 x2=(1+√677)/2⇒y2=(-3+√677)/2

 x-2y=-28;x-y=-2  Solution :  {x,y} = {24,26}  System of Linear Equations entered :   [1] x - 2y = -28   [2] x - y = -2 Graphic Representation of the Equations : -2y + x = -28 y + x = -2 olve by Substitution : // Solve equation [2] for the variable  x     [2] x = y - 2 // Plug this in for variable  x  in equation [1]   [1] (y -2) - 2y = -28   [1] - y = -26 // Solve equation [1] for the variable  y     [1] y = 26  // By now we know this much :   x = y-2   y = 26 // Use the  y  value to solve for  x     x = (26)-2 = 24  Solution :  {x,y} = {24,26}