function of polynomial

Question

x	y
0	5
2	3
4	1
5	0
8	-2

 the function  f is defined by a polynomial. some values of x and f(x) are shown in the table above . which of the following must be true a factor of f(x)?  

a) x

b) x-3

c) x-5

d) x-8

Answer 1

y=5-x (nun av abuv)

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