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Find the value of a and b so that the po...

Find the value of a and b so that the polynomial `p(x)=x^(4)+x^(3)+8x^(2)-ax+b` is exactly divisible by `x^(2)-1`.

A

a=1, b=9

B

a=1, b=-9

C

a=2, b=1

D

a=-2, b=-1

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