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 9: 2 căn a + 4 = a+1 help meee, đây là tìm x ạ

Toán Lớp 9: 2 căn a + 4 = a+1
help meee, đây là tìm x ạ

Comments ( 1 )

  1. 2 $\sqrt{a}$ + 4 = a + 1
    ⇔ a – 2 $\sqrt{a}$ + 1 = 4
    ⇔ ($\sqrt{a}$ – 1)² = 4
    ⇔ $\sqrt{a}$ – 1 = 2
    ⇔ $\sqrt{a}$ = 3
    ⇔ a = 9

Leave a reply

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