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

1 bình luận về “2x-1/x(x+1)=1/x?? ciusssssssssssssssssssssssssssssssssssssssssssss”

1. ĐKCĐ: $\{\genfrac{}{}{0ex}{}{x\ne -1}{x\ne 0}$

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

   <=>{x(2x-1)}/{x^2(x+1)}={x(x+1)}/{x^2(x+1)}

   <=>x(2x-1)=x(x+1)

   <=>2x^2-x-x^2-x=0

   <=>x^2-2x=0

   <=>x(x-2)=0

   <=> $[\begin{array}{l}x=0(L)\\ x=2(N)\end{array}$ 

   Vậy x=2

   Trả lời