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    Question

    (64/25)?Β  Γ— (125/512)?-1Β =Β 

    5/8
    A 3 Correct Answer Incorrect Answer
    B 8 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 12 Correct Answer Incorrect Answer
    E 2 Correct Answer Incorrect Answer

    Solution

    ? = x γ€–(8/5)γ€—^2xΒ  Γ— γ€–(5/8)γ€—^(3x-3)=Β  5/8Β  β‡’ γ€–(5/8)γ€—^(-2x)Β  Γ— γ€–(5/8)γ€—^(3x-3)=Β  5/8Β  β‡’ (5/8)^(-2x+3x-3) =Β  5/8 β‡’ (5/8)^(x-3) =Β  5/8 β‡’x-3=1 β‡’x=4Β 

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