111^2 – 137^2 – 48^2 + 96 x 137

Question

111^2 – 137^2 – 48^2 + 96 x 137

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Eirian 5 years 2020-10-26T05:55:22+00:00 2 Answers 79 views 0

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  1. Jezebel
    0
    2020-10-26T05:56:56+00:00
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    Đáp án:

     $111^2 – (137^2 + 48^2 – 96 x 137)$

    $ = 111^2- (137 -2 . 48 . 137 + 48^2)$

    $ = 111^2 – (137 -48)^2$

    $=111^2 – 89^2$

    $= (111+89) . (111-89)$

    $=200 . 22$

    $=4400$

     

  2. Dau
    0
    2020-10-26T05:57:09+00:00
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           The best of team _ minhhai2k10         

                  Bạn tham khảo nha ^~^

    Giải thích các bước giải :

    =

     

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