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Natalka [10]
3 years ago
13

Qual o valor numérico da expressão a ³-2a² +5a, para a= 2/3

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
5 0
<span>a ³-2a² +5a
(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
(98 - 24) / 27
74 / 27

</span>
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