Question

find the value k for (×-1)is a factor of (2×3+9×2+ × + k .​

Answer 1

Answer:

if x-1 is a factor of p(x)=(2x^3+9x^2+x+k) then

x-1=0

x=1

therefore

p(1)=2(1)^3+9(1)*2+1+k=0

2+9+1+k=0

hence k=-12

Answer 2

Answer:

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