Respostas
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a³-2.a²+5.a
(2/3)^3-2. (2/3)^2+5.2/3
8/27-2.4/9+10/3
8/27-8/9+10/3
8-24+90/27
74/27
(2/3)^3-2. (2/3)^2+5.2/3
8/27-2.4/9+10/3
8/27-8/9+10/3
8-24+90/27
74/27
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