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: 2x^2+6x-216=0 triển khai hộ mik vs ạ

Toán Lớp 8: 2x^2+6x-216=0 triển khai hộ mik vs ạ

Comments ( 1 )

  1. ~ Bạn tham khảo ~
    2x^2 + 6x – 216 = 0
    <=> 2(x^2 + 3x – 108) = 0
    <=> 2(x^2 + 12x – 9x – 108) = 0
    <=> 2[x(x+12) – 9(x + 12)] = 0
    <=> 2(x+12)(x-9) = 0
    <=> [(x+12=0),(x-9=0):}
    <=> [(x=-12),(x=9):}
    Vậy x={-12;9}

Leave a reply

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