I assume that the two equations are:
Substituting into equation 2 gives
Now expand, collect like terms, and solve.
cheers guys. appreciate the help.
the only bit i'm not too sure on is how to get from
x2 + (2x+3)2 = 2 to
x2 + 4x2 + 12x = 9 =2
would really appreciate if you could explain what i have to do.