check whether -2 and 2 are the zeros of polynomial x power 4 - 16
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check attachment plzz
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-2 and +2
(x)=x^4-16
p(-2)=(-2)^4 -16
16-16
=0
yes it is a zero
p(2)=2^4-16
=16-16
=0
yes it is a zero
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