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Question

If x1, what is a factor of the polynomial 3x2+mx then find the value of m,

A
2
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B
2
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C
3
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D
3
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Solution

The correct option is C 3
p(x)=3x2+mx

(x1) is a factor of p(x)

Using the remainder theorem, we can write
p(1)=0

3(1)2+m(1)=0

3+m=0

m=3

Option C

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