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Question

The solution set of the equation log5/(x2+6)(13+4x24x)=log7+x(2xx2) is

A
9
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B
16
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C
81
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D
none of these
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Solution

The correct option is C none of these
First check the domain of the given equation,
(i) x>0
(ii)2xx2>0x2+2x<0x(x+2)<0x(2,0)
Clearly using (i) and (ii) domain is ϕ(empty set)
Hence,there will not be any solution for the given equation.

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