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25 June, 21:34

If 3^x = 5, then 3^2x+3 = ?

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  1. 26 June, 01:24
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    Answer:28

    Step-by-step explanation:

    3^x=5

    3^2x+3

    (3^x) ^2 + 3

    Substitute 3^x=5 in (3^x) ^2 + 3

    5^2 + 3

    5x5+3=28
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