answer it fastly please
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We are asked to check weather -3 and +3 are zeroes of p(x)
To do this we have to substitute x= +3 and x=-3 into our polynomial.
p(-3)=(-3)²-9=0
p(3)=(3²)-9=0
we get 0 in both cases which means that both -3 and +3 are zeroes of this polynomial
THAT'S IT!