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Question

If x+1 is a factor of x4+(p3)x3(3p5)x2+(2p9)x+6 then find the value of p.

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Solution

Given, x+1 is a factor of x4+(p3)x3(3p5)x2+(2p9)x+6.
Then x=1 will satisfy x4+(p3)x3(3p5)x2+(2p9)x+6=0.
Then we'll get,
1+(3p)(3p5)+(92p)+6=0
or, 246p=0
or, p=4.

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