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x^6-(3*x^5)-x^4+7*x^3-(4*x) = 0;x
x
(2*x^5-(13*x^3)+2*x+8)^(1/2)
sin(x^2+1)
abs(abs(x-1)-1) = abs(x-2);x
x
ln(x) = 0;x
x
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