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 7: giúp mk (2x – 3 )^ 2= 7 nhanh

Toán Lớp 7: giúp mk
(2x – 3 )^ 2= 7
nhanh

Comments ( 2 )

  1. (2x-3)^2=7
    <=>2x-3=sqrt{7}
    <=>2x=sqrt{7}+3
    <=>x=(sqrt{7}+3)/2

  2. (2x-3)^2=7
    ⇔(2x-3)^2=(\sqrt{7})^2
    ⇔2x-3=\sqrt{7}
    ⇔2x=\sqrt{7}+3
    ⇔x=(\sqrt{7}+3)/(2)
    Vậy x=(\sqrt{7}+3)/(2)
     

Leave a reply

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

About Chi