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B
92
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C
52
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D
None of these
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Solution
The correct option is D92 x−1x−2−x−2x−3=x−5x−6−x−6x−7⇒(x−1)(x−3)−(x−2)2(x−2)(x−3)=(x−5)(x−7)−(x−6)2(x−6)(x−7)⇒−1(x−2)(x−3)=−1(x−6)(x−7)⇒(x−2)(x−3)=(x−6)(x−7)⇒x2−5x+6=x2−13x+42⇒8x=36⇒x=92