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Question

Find the value of k, if (x −1) is a factor of p(x) in the following case:
p(x)=2x2+kx+2


A
k=2
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B
k=2
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C
k=22
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D
k=2+2
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Solution

The correct option is C k=22

p(x)=2x2+kx+2

p(1)=0.

p(1)=2(1)2+k(1)+2=0

2+k+2=0

k=22

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