16. Check whether –2 and 2 are zeroes of the polynomial x + 2
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p(-2)=-2+2=4
p(2)=2+2=4
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A zero or root of a polynomial function is a number that, when plugged in for the variable, makes the function equal to zero. Hence, Yes, -2 and -2 are zeroes of the polynomial x4 – 16.
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