If 9\sqrtx=\sqrt12+\sqrt147, then x = ?

RRB Junior Engineer Stage 1 Model Papers 9

Question : 3 of 100

Marks: +1, -0

9√x=√12+√147

, then x = ?

Solution:

9√x=√{3×2×2}+√{3×7×7}

=9√x=2√3+7√3=9√3

x=3

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