Mọi người giúp vs ạ $\frac{(x+3)^{5}}{(x+3)^{2}}$= $\frac{64}{27}$

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Mọi người giúp vs ạ
$\frac{(x+3)^{5}}{(x+3)^{2}}$= $\frac{64}{27}$

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Daisy 6 ngày 2021-12-07T12:38:58+00:00 2 Answers 2 views 0

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    0
    2021-12-07T12:40:18+00:00

    `(x+3)^5/(x+3)^2=64/27`

    `⇒(x+3)^3=64/27`

    `⇒(x+3)^3=(4/3)^3`

    `⇒x+3=4/3`

    `⇒x=4/3-3`

    `⇒x=4/3-9/3`

    `⇒x=-5/3`

     

    0
    2021-12-07T12:40:31+00:00

    Đáp án:

    `x=\-frac{5}{3}`

    Giải thích các bước giải:

    Ta có :

    `\frac{(x+3)^5}{(x+3)^2}=\frac{64}{27}`

    `→(x+3)^3=\frac{64}{27}`

    `→(x+3)^3=(\frac{4}{3})^3`

    `→x+3=\frac{4}{3}`

    `→x=\frac{4}{3}-3`

    `→x=\-frac{5}{3}`

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