Giúp mik vs ạ cảm ơn

Question

Giúp mik vs ạ cảm ơn
giup-mik-vs-a-cam-on

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Doris 4 years 2020-11-01T09:46:31+00:00 2 Answers 66 views 0

Answers ( )

  1. mit
    0
    2020-11-01T09:47:52+00:00
    Reply

    Đáp án:

     

    Giải thích các bước giải:

     

    giup-mik-vs-a-cam-on

  2. Latifah
    0
    2020-11-01T09:48:27+00:00
    Reply

    `a)(2/5+3/4)^2`

    `=(8/20+15/20)^2`

    `=(33/20)^2`

    `=1089/400`

    `b)(1/6-5/4)^2`

    `=(2/12-15/12)^2`

    `=(-13/12)^2`

    `=169/144`

    `c)(45^10×5^20)/(75^10)`

    `=(45^10×(5^2)^10))/(75^10)`

    `=(45^10×25^10)/(75^10)`

    `=(675^10)/(75^10)`

    `=(675/75)^10`

    `=9^10`

    `d)((0,8)^5)/((0,4)^6)`

    `=((2×0,4)^5)/((0,4)^5×0,4)`

    `=(2^5×(0,4)^6)/((0,4)^5×0,5)`

    `=(2^5)/0,4`

    `=64/0,4`

    `=260`

    `e)(2^15×9^4)/(6^6×8^3)`

    `=(2^15×(3^3)^4)/((2×3)^6×(2^3)^3)`

    `=(2^15×3^12)/(2^6×3^6×2^9)`

    `=(2^15×3^6×3^6)/(2^15×3^6)`

    `=(1×1×3^6)/(1×1)`

    `=3^6`

    `=729`

    CHÚC BẠN HỌC TỐT!!!

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