Question

find the value of k for which X - 1 is a factor of 2 x cube + 9 X square + X + k

Answer 1

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Answer 2

x-1=0 ,X=1 now put the value of X in given equation 2(1)^3 +9(1)^2+1+k=0
2+9+1+k=0
12+k=0
k=0-12=-12
k=-12