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Jair161616
@Jair161616
January 2020
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Se a = – 5 e b = – 2, o valor da expressão 2a^3 –3ab^2 é:
A) – 310.
B) – 190.
C) 190.
D) 310.
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Oguchi
A=-5
b=-2
2a³-3ab²
2(-5)³-3(-5)(-2)²
(2.-125)-(60)
-250-60
-310
Alternativa A
0 votes
Thanks 0
Undeyr
Substituindo os valores, temos:
Item C
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jair161616
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Lista de comentários
b=-2
2a³-3ab²
2(-5)³-3(-5)(-2)²
(2.-125)-(60)
-250-60
-310
Alternativa A
Item C