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: ($x^{4}$ – 2$x^{2}$ + 1) : (1 – $x^{2}$)

Toán Lớp 8: ($x^{4}$ – 2$x^{2}$ + 1) : (1 – $x^{2}$)

Comments ( 2 )

  1. $\\$
    (x^4 -2x^2+1):(1-x^2)
    = [(x^2)^2 – 2 . x^2 . 1 +1^2] : (1-x^2)
    = (x^2 – 1)^2 : (1-x^2)
    = (1 – x^2)^2 : (1-x^2)
    = 1-x^2

  2. $\text{($x^{4}$-2$x^{2}$+1):(1-$x^{2}$)}$
    $\text{=$(x^{2}-1)^{2}$:(1-$x^{2}$)}$
    $\text{=$(1-x^{2})^{2}$:(1-$x^{2}$)}$
    $\text{=(1-$x^{2}$)(1-$x^{2}$):(1-$x^{2}$)}$
    $\text{=1-$x^{2}$}$
     

Leave a reply

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