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B
(x−3)(x−5)
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C
(x−3)(x−7)
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D
(x−5)(x−7)
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Solution
The correct option is A(x−3)(x−5)(x−7) The irreducible factors occuring in (x−3)(x−5)and(x−5)(x−7) are (x−3),(x−5)and(x−7) The greatest exponents of these respectively are 1,1 and 1. Hence, the LCM = (x−3)1×(x−5)1×(x−7)1=(x−3)(x−5)(x−7).