Question: For the function f (x) = x4 - 6x3 + x2 + 24x - 20, Use long division to determine whether each of the following

For the function
f (x) = x4 - 6x3 + x2 + 24x - 20,
Use long division to determine whether each of the following is a factor of f (x).
a) x+1
b) x - 2
c) x + 5

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