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 10: √5x+6 = x -6 5x+6 trong căn nha awrawrawrawrawawtawt

Toán Lớp 10: √5x+6 = x -6
5x+6 trong căn nha awrawrawrawrawawtawt

Comments ( 2 )

  1. Giải đáp$\quad+\quad$Giải thích:
    \sqrt{5x+6} =x-6(x>=(-6)/5)
    <=>5x+6=(x-6)^2
    <=>5x+6=x^2+12x+36
    <=>x^2-12x-5x+36-6=0
    <=>x^2-17x+30=0
    <=>x^2-2x-15x+30=0
    <=>x(x-2)-15(x-2)=0
    <=>(x-2)(x-15)=0
    <=>[(x-2=0),(x-15=0):}
    <=>[(x=2(L)),(x=15(t//m)):}
    Vậy S={15}

Leave a reply

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