Question

 

(x-3)(x^2+3x+9)-(3x-17)=x^3-12

Answer 1

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Answer 2

(x−3)(x2+3x+9)−(3x−17)=x^3−12

⇔x^3−27−3x+17−x^3+12=0

⇔2−3x=0

⇔3x=2⇒x=2/3