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1/x+1/(x^2)+1/(x^3)
abs((x^2-(4*x)+4)/(2*x^2+3*x-2)) > 2;x
x
0.3*(1/3)
(180*(7-2))/(7-2)
1*x^3-(3*x^2)-(8*x)+20 = 0;x
x
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