Question

verify whether×=3 is a zero of the polynomial
${x}^{3} + 2x - 15$

Answer 1

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Answer 2

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Given:- x=3


Polynomial:-. x²+2x-15

x²+2x-15=0

(3)²+2(3)-15=0

9+6-15=0

15-15=0
==========So... x=3 is a zero of the polynomial x²+2x-15