Find any rational roots of P(x).
P(x)=3x^4+2x^3-9x^2+4

Find any rational roots of P(x).
P(x)=3x^4+2x^3-9x^2+4

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try 1, -1 first
then 2, -2
then 4,-4
if these don't work we have to move on to fractions

So what exactly is the textbook way for your textbook

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