Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: Phép tính x mũ 2 / x-1- 2x-1/x-1 có kết quả là

Toán Lớp 8: Phép tính x mũ 2 / x-1- 2x-1/x-1 có kết quả là

Comments ( 2 )

  1. Answer
    x^2/{x – 1} – {2x – 1}/{x – 1} $\text{(Đk:}$ x \ne 1)
    = {x^2 – 2x + 1}/{x – 1}
    = {x^2 – 2 . x . 1 + 1^2}/{x – 1}
    = {(x – 1)^2}/{x – 1}
    = x – 1

  2. (x^2)/(x – 1) – (2x – 1)/(x – 1)
    = (x^2 – 2x + 1)/(x – 1)
    = (x^2 – 2.x.1 + 1^2)/(x – 1)
    = ( (x – 1)^2)/(x – 1)
    = x – 1

Leave a reply

222-9+11+12:2*14+14 = ? ( )

About Nhân