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paola1234567890
@paola1234567890
October 2020
2
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1)o valor do numero da expressão 2x²+8,para x igual a -3 é?
A)17
B)18
C)26
D)34
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cisabella
2x²+8,para x igual a -3
2x²+8
2.(-3)² + 8
2.(+9) + 8
18 + 8
26
Alternativa "C".
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eluciamonteiro
Verified answer
2 . (-3)*2 + 8 = 2.9+8 = 18+8 = 26
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Lista de comentários
2x²+8
2.(-3)² + 8
2.(+9) + 8
18 + 8
26
Alternativa "C".
Verified answer
2 . (-3)*2 + 8 = 2.9+8 = 18+8 = 26