SOLUTION: Please, someone help me. I am having difficulties to find the rational zeros of p(x)=x^4+2x^3-2x^2-3x+2

Question 953927: Please, someone help me. I am having difficulties to find the rational zeros of p(x)=x^4+2x^3-2x^2-3x+2
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

By the rational roots theorem, the possible rational roots are +/-1 and +/-2.
Looks like and are zeros.
Plug them in to verify.
I'll do one, you do the other,

By the graph and the rational roots theorem, the other two roots are not rational.

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