Solve each of the following two systems of equations
Hello,
multiply the first one by 2 :
Add the two equations :
Complete the square :
Hence
Let's do the first case : (1)
Substitute in the equation :
So you have the system :
For the second case : (2)
Substitute in the very first equation :
So you have the system :
Also, be careful of the extraneous solutions.
Yah I know it's very long... I may have gone the wrong way ><
The first system gives awful solutions, but the second system gives nice solutions : (2,sqrt(2)) and (sqrt(2),2)