Question
( x+frac{1}{2 x}=3 )
( Rightarrow 2left(x+frac{1}{2 x}right)=2 times 3 )
( Rightarrowleft(2 x+frac{1}{x}right)=6 )
( Rightarrowleft(2 x+frac{1}{x}right)^{2}=(6)^{2}=36 )
( Rightarrow 4 x^{2}+frac{1}{x^{2}}+4=36 )
( Rightarrow 4 x^{2}+frac{1}{x^{2}}=32 )
( therefore 4 x^{2}+frac{1}{x^{2}}=32 )

x+1=3 , 可 4x +1 亚 ? 2X 售 good
Solution
