Question 46951
4x/(x^2+3) - 1=0 

Rewrite as follows:

4x/(x^2+3)=1
Multiply thry by x^2+3 to get:

4x = x^2+3
Rearrange:
x^2-4x+3=0
(x-3)(x-1)=0
x=3 or x=1 

Cheers,
Stan H.