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Question

Consider the following statements :
1. x2 is a factor of x33x2+4x4
2. x+1 is a factor of 2x3+4x+6
3. x1 is a factor of x6x5+x4x3+x2x+1
Of these statements

A
1 and 2 are correct
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B
1, 2 and 3 are correct
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C
2 and 3 are correct
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D
1 and 3 are correct
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Solution

The correct option is A 1 and 2 are correct
1. Remainder =233×22+4×24
=812+84=0
Hence x2 is a factor.
2. Remainder=2(1)3+4(1)+6
=24+6=0
Hence x+1 is a factor.
3. Ramainder =1615+1513+121+1=1
Hence x1 is not a factor.
Statements 1 and 2 are correct.

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