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Question

If (x3+5x2+10k) leaves remainder −2x when divided by x2+2, then what is the value of k?

A
2
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B
1
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C
1
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D
2
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Solution

The correct option is C 1
"Putting x2=2 in x3+5x2+10k, we have the remainder =2x10+10k.
Also given remainder is 2x. Thus 2x=2x10+10kk=1."

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