esta prova foi feita para o 8 ano com assunto de polinomios

1. ALUNO (A):________________________________________________________________ Nº:____
PROF.: RENAN S. DE JESUS ANO: 8º SALA: 05 TURNO: VESP.
EXERCÍCIO DE VERIFICAÇÃO DE MATEMÁTICA
01. (OBMEP) Sendo a = 4 e b = - 6, encontre o valor numérico das seguintes expressões algébricas:
a) 3a + 5b=__________________________________________________________________________
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b) a² - b=____________________________________________________________________________
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c) 10ab + 5a² - 3b=____________________________________________________________________
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d) a²+b²=____________________________________________________________________________
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02. (OBMEP) Escreva uma expressão algébrica para expressar o perímetro e outra para a área da
figura abaixo:
P=______________________________________________
___________________________________A=______________________________________________
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03. (COLÉGIO NAVAL) Simplifique os polinômios:
a) 8xy + 3xyz - 4xyz + 2xy=____________________________________________________________
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b) a + b + ab + 5b + 3ab + 9a - 5c=______________________________________________________
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c) x³ + 10x² + 5x - 8x² - x³=_____________________________________________________________
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d) 10ab + 5a² - 3b+5ab + 10a² - 3b=_____________________________________________________
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04. (OBMEP) Sendo, A = x - 2y, B = 2x + y e C = y + 3
Calcule:
a) A + B=___________________________________________________________________________
___________________________________________________________________________________
b) B - C=___________________________________________________________________________
___________________________________________________________________________________
c) A.C=_____________________________________________________________________________
___________________________________________________________________________________
d) B.C=_____________________________________________________________________________
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05. (COLÉGIO NAVAL) Qual o resultado da divisão do polinômio 18x + 24x³ - 6x² + 9x pelo⁴
monômio 3x?
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2. ALUNO (A):________________________________________________________________ Nº:____
PROF.: RENAN S. DE JESUS ANO: 8º SALA: 05 TURNO: VESP.
___________________________________________________________________________________
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