Cho A=2x-1/2x-1:(2x-1+2-4x/2x+1)-4018/1-2x (x±1/2) Rút gọn A

1 bình luận về “Cho A=2x-1/2x-1:(2x-1+2-4x/2x+1)-4018/1-2x (x±1/2) Rút gọn A”

1. Giải đáp:

   bài làm 

    A=$\frac{2x-1}{2x-1}$  : (2x-1+ $\frac{2-4x}{2x+1}$ ) – $\frac{4018}{1-2x}$ 

      = $\frac{2x-1}{2x-1}$ : ($\frac{(2x-1). (2x+1)}{2x+1}$ –  $\frac{4x-2}{2x+1}$ ) + $\frac{4018}{2x-1}$ 

      = $\frac{2x-1}{2x-1}$ : ($\frac{(2x-1).(2x+1)- 2 . (2x-1)}{2x+1}$ )  + $\frac{4018}{2x-1}$ 

      = $\frac{2x-1}{2x-1}$ : $\frac{(2x-1)}{2x+1}$ + $\frac{4018}{2x-1}$ 

      = $\frac{2x-1}{2x-1}$ . $\frac{2x+1}{2x-1}$ + $\frac{4018}{2x-1}$ 

      = $\frac{2x+1}{2x-1}$ + $\frac{4018}{2x-1}$ 

      = $\frac{2x + 4019}{2x-1}$ 

   Trả lời