Question

2x-1/x(x+1)=1/x

Answer 1

2x-\(\dfrac{1}{x}\left(x+1\right)\)=\(\dfrac{1}{x}\)(đk x\(\ne\)0)

<=>2x\(^2\)-x-1=1

<=>2x\(^2\)-x-2=0 

x1=<=>

Answer 2

2x-\(\dfrac{1}{x}\left(x+1\right)=\dfrac{1}{x}\)(đk x\(\ne\)0)

<=>2x\(^2\)-x-1=1

<=>2x\(^2\)-x-2=0

<=>

<=>(thỏa mãn x\(\ne\)0)