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    4. Surds and indices
    5. If √7 × √35 = x√5, then find the value of x

    Question

    If √7 × √35 = x√5, then find the value of

    x
    A 3 Correct Answer Incorrect Answer
    B 7 Correct Answer Incorrect Answer
    C 2 Correct Answer Incorrect Answer
    D 9 Correct Answer Incorrect Answer

    Solution

    √7 × √35 = x√5 √(7) × √(7×5) = x√(5) 7 × √5 = x√5 :. x = 7 

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