Is x+3 a factor of 4x^3+5x^2+8?

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12 votes

Answer:

Explanation:

$P(x)=4x^3+5x^2+8\\\\P(-3)=(-3)^4+5*(-3)^2+8=81+45+8=134\ and\ not\ zero\ !!!!\\$

x+3 is not a factor of P(x)

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