7 : (3/2 – 1/3)mu 2 bai nay la tinh gia tri bieu thuc

Question

7 : (3/2 – 1/3)mu 2
bai nay la tinh gia tri bieu thuc

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Maris 4 years 2020-10-29T00:27:52+00:00 2 Answers 82 views 0

Answers ( )

  1. Adela
    0
    2020-10-29T00:29:26+00:00
    Reply

    `7:(3/2-1/3)^2`

    `=7:(7/6)^2`

    `=7:(7^2)/(6^2)`

    `=\frac{7.6^2}{7^2}`

    `=(6^2)/(7)`

    `=(36)/7`

     

  2. Sigrid
    0
    2020-10-29T00:29:27+00:00
    Reply

    7 : ( 3/2-1/3)^2 

    = 7 : ( 9/6 – 2/6 )^2

    = 7 : 7/6^2

    = 7 : 49/36

    =36/7

     

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )