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How would I go about solving this problem?

$$3x^3 + 6x^2 = 9x + 18$$

I know to move the variables to other side of course, but what's the next move?

Michael Hardy
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SenzuBean
  • 61

1 Answers1

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You could collect all terms on the same side and proceed. Here is another slightly different way. Note that $3x^3+6x^2 = 3x^2(x+2)$ and $9x+18 = 9(x+2)$. We hence get $$3x^2(x+2) = 9(x+2)$$ Hence, either $x+2$ or $0$ or $3x^2 = 9$. I trust you can finish it off from here.