A) 2
B) 3
C) 6
D) 5
Correct Answer: C
Solution :
\[\sqrt{3{{x}^{2}}-7x-30}+\sqrt{2{{x}^{2}}-7x-5}=x+5\] \[\sqrt{3{{x}^{2}}-7x-30}=(x+5)-\sqrt{2{{x}^{2}}-7x-5}\] on squaring, \[\sqrt{2{{x}^{2}}-7x-5}=5\] \[2{{x}^{2}}-7x-30=0\,\,\Rightarrow \,\,x=6\].
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