5 is one of the zeroes of the polynomial p(x)=x^3+9x^2+23x+15
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Answer:
480
Step-by-step explanation:
p(x) = x^3 + 9x^2 + 23x + 15
= 5^3 + 9×5^2 + 23×5 + 15
= 125+ 225 + 115 + 15
= 480
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