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Question

When x3 - 3x2 + 5x - 3 is divided by x2 - k , the remainder is 7x + a . Then the value of k is_____


A

2

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B

1

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C

3

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D

6

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Solution

The correct option is A

2


On long division , we have

Remainder = ( 5 + k)x - 3k - 3 = 7x + a

Equating the coefficient of x , we get

5 + k = 7

=> k = 2


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