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+6/x+2-x-5/x^2+2x Giúp mình với ạ mình đang cần gấp lắm

Toán Lớp 8: x+6/x+2-x-5/x^2+2x
Giúp mình với ạ mình đang cần gấp lắm

Comments ( 2 )

  1. #Hugg
    (x+6)/(x+2)-(x-5)/(x^2+2x)\ (x \ne 0 ; x \ne -2)
    =(x+6)/(x+2)-(x-5)/(x(x+2))
    =(x(x+6))/(x(x+2))-(x-5)/(x(x+2))
    =(x^2+6x-x+5)/(x(x+2)
    =(x^2+5x+5)/(x(x+2)
     

  2. {x+6}/{x+2}-{x-5}/{x^2+2x}
    ={x+6}/{x+2}-{x-5}/{x(x+2)}
    ={x(x+6)}/{x(x+2)}+{-(x-5)}/{x(x+2)}
    ={x^2+6x-x+5}/{x(x+2)}
    ={x^2+5x+5}/{x(x+2)}

Leave a reply

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

About Thúy Mai