Find all the real zeros of the polynomial P(x)=x²-x³-3x²+x+2 List the real zeros below. If there is more than one zero, give them as a comma-separated list. List each zero x = c as many times as the number of times -c is a factor of P(x). So for example if (x - c)2 is a factor, then list c twice. Answer = 1,-1,2

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