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Question

Largest interval in which the inequality (x+3)(2+x)(x1)(x5)>x2+5x+6x26x+5 is true?

A
(3,1)
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B
(2,5)
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C
(1,5)
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D
(5,)
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Solution

The correct option is D (1,5)
|x2+5x+6x26x+5|>x2+5x+6x26x+5 holds true only when x2+5x+6x26x+5<0
Hence,
x2+5x+6x26x+5<0
(x+3)(x+2)(x1)(x5)<0
It is possible when
x ϵ(3,2)and(1,5)

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