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  1. If 9√x = √12 + √147 , then x = ?
    1. 2
    2. 3
    3. 4
    4. 5
Correct Option: B

9√x = √3 × 2 × 2 + √3 × 7 × 7
⇒  9√x = 2√3 + 7√3 = 9√3
∴  x = 3


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