The solution set of the equation log5/(x2+6)(13+4x2−4x)=log7+√x(−2x−x2) 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)−2x−x2>0⇒x2+2x<0⇒x(x+2)<0⇒x∈(−2,0) Clearly using (i) and (ii) domain is ϕ(empty set) Hence,there will not be any solution for the given equation.