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: Cho ab/cd. CMR: ab/cd= (a-b)^2/(c-d)^2

Tháng Sáu 19, 2022 Toán học 1 Comment 0 views

Toán Lớp 7: Cho ab/cd. CMR:
ab/cd= (a-b)^2/(c-d)^2

Comments ( 1 )

  1. tuyen98
    tuyen98
    19 Tháng Sáu, 2022 at 6:50 sáng
    Reply
    Giải đáp:
    a/c = b/d = (a – b)/(c – d)
    -> (a/c)^2 = ( (a – b)/(c – d))^2
    -> a/c . a/c = (a – b)^2/(c – d)^2
    -> a/c . b/d = (a – b)^2/(c – d)^2 (a/c = b/d)
    -> (ab)/(cd) = (a – b)^2/(c – d)^2
    Vậy (ab)/(cd) = (a – b)^2/(c – d)^2
    #dariana

Leave a reply

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

Hòa Tâm

About Hòa Tâm