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x-2=0
x=2
reemplazamos en el polinomio :
2(32) - 8 -8 +1
65 - 16
49 ------------> le restamos 49 para que salga 0 y sea divisible
nos piden la suma de cifras de dicho numero :
4+9 = 13
clave C
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espero que te ayude :D