Solve in R this equation :

2. Originally Posted by dhiab
Solve in R this equation :
Square both sides to get $x^4-6x^2+9=3-x\implies x^4-6x^2+x+6=0$. Clearly, $x=-1$ is a solution. With this, do some long division, and see if you can come up with additional solutions.

I hope this helps.

3. Originally Posted by Chris L T521
Square both sides to get $x^4-6x^2+9=3-x\implies x^4-6x^2+x+6=0$. Clearly, $x=-1$ is a solution. With this, do some long division, and see if you can come up with additional solutions.

I hope this helps.
Hello:Clearly x=2 is solution with second equation and no the first. I'can divide by : (x-1)(x-2)

4. I know of a neat way for solving this type of equations.
You need to do some simplication usually before you get the equation for x and u after the subtraction.