Question

(2x-y) (2x+4y) (4Y2+Y2)

Answer 1

2x-y=-5;2x-4y=-2  

Solution :

{x,y} = {-3,-1}  

 

System of Linear Equations entered :

  [1]    2x - y = -5

  [2]    2x - 4y = -2

Graphic Representation of the Equations :

   y + 2x = -5        -4y + 2x = -2  

 

 

Solve by Substitution :

// Solve equation [1] for the variable  y  

 

 [1]    y = 2x + 5

// Plug this in for variable  y  in equation [2]

  [2]    2x - 4•(2x+5) = -2

  [2]    -6x = 18

// Solve equation [2] for the variable  x  

  [2]    6x = - 18  

  [2]    x = - 3  

// By now we know this much :

   x = -3

   y = 2x+5

// Use the  x  value to solve for  y  

   y = 2(-3)+5 = -1  

Solution :

{x,y} = {-3,-1}  

  Processing ends successfully