Feb 22nd 2011, 22:08:00
So this one question has been pissing me off, and I have tried passing it and going back but it is really annoying.
Sqrt(x+4)=x^2-5
Now after working it out, I square each side to get:
X+4=x^4-10x^2+25
Then move the LHS to the RHS
0=x^4-10x^2-x+21
But that is where I get stuck. I can't seem to find a way to solve that...
Help please? Lol
Sqrt(x+4)=x^2-5
Now after working it out, I square each side to get:
X+4=x^4-10x^2+25
Then move the LHS to the RHS
0=x^4-10x^2-x+21
But that is where I get stuck. I can't seem to find a way to solve that...
Help please? Lol