f(x)=x^3+5x^2+9x+45(adsbygoogle = window.adsbygoogle || []).push({});

x^3+5x^2+9x+45=0

x^2(x+5)+9(x-5)=0

(x^2+9)(x+5)=0

What happends to the (x+5)?

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# Homework Help: Find the real zeros of the function algebraically

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