LISTA DE ATIVIDADES DA 7ª/8º (MONÔMIOS E POLINÔMIOS) e 8ª/9º (EQUAÇÕES DO 2º GRAU).
Autor: Márcio Bandeira | Publicado: 2012-11-07T10:36:00-08:00




Escola municipal professora Noécia vidal cavalcante

DISCIPLINA: Matemática&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Série:
7ª

Profº: Márcio Bandeira.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Data:
30/11

Aluno: __________________________________ Valor: 6,0 – Nota
Obtida: _____________.

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lista - iv unidade




1.
EFETUE AS DIVISÕES DE MONÔMIOS:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 







a) 10x5: 2x³ =

b) 25y7: 5y4=

c) 12a5: 4a³ =

d) 20x³ : 10x² =







2 – ADIÇÃO DE POLINÔMIOS
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a)
(2x²-9x+2)+(3x²+7x-1)
b) (5x²+5x-8)+(-2x²+3x-2)
c) (3x-6y+4)+(4x+2y-2)
d) (5x²-7x+2)+(2x²+7x-1)&nbsp;
e) (4x+3y+1)+(6x-2y-9)
f) (2x³+5x²+4x)+(2x³-3x²+x)
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2 – SUBTRAÇÃO DE POLINÔMIOS
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a)
(5x²-4x+7)-(3x²+7x-1)
b) (6x²-6x+9)-(3x²+8x-2)
c) (7x-4y+2)-(2x-2y+5)
d) (4x-y-1)-(9x+y+3)
e) (-2a²-3ª+6)-(-4a²-5ª+6)
f) (4x³-6x²+3x)-(7x³-6x²+8x)
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3 – MULTIPLICAÇÃO DE POLINÔMIOS
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a) 3(x+y)
b) 7(x-2y)
c) 2x(x+y)
d) 4x (a+b)
e) 2x(x²-2x+5)
f) (x+5).(x+2)
g) (3x+2).(2x+1)
h) (x+7).(x-4)
i) (3x+4).(2x-1)
j) (x-4y).(x-y)
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4 – DIVISÃO DE UM POLINOMIO POR UM MONÔMIO.
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a) ( 12x² – 8x) : (+2x) =
b) (3y³ + 6y²) : (3y) =
c) ( 10x² + 6x) : (-2x) =
d) (4x³ – 9x) : (+3x) =







ESCOLA MUNICIPAL PROFESSORA NÓECIA VIDAL CAVALCANTE

DISCIPLINA DE MATEMÁTICA – PROFESSOR: MÁRCIO BANDEIRA

SÉRIE: 8ª A e B - MATUTINO

ALUNOS: _________________________ /
_________________________



LISTA DE ATIVIDADE – IV UNIDADE



DATA DA ENTREGA:

TURMAS: 8ª A –

8ª B – 29/11



OBSERVAÇÃO: TODAS AS
QUESTÕES TEM QUE SER RESPONDIDAS.



1. Identifique os
coeficientes de cada equação e diga se ela é completa ou não:



a) 5x2&nbsp;- 3x - 2 = 0

b) 3x2&nbsp; + 55 = 0

c) x2&nbsp;- 6x = 0

d) x2&nbsp;- 10x + 25 = 0



2. Dentre os números -2, 0, 1, 4, quais deles
são raízes da equação x2-2x-8= 0?



3. Achar as raízes das equações:








1) x² - 5x + 6 = 0
2) x² - 8x + 12 = 0
3) x² + 2x - 8 = 0
4) x² - 5x + 8 = 0
5) 2x² - 8x + 8 = 0
6) x² - 4x - 5 = 0
7) -x² + x + 12 = 0
8) -x² + 6x - 5 = 0
9) 6x² + x - 1 = 0
10) 3x² - 7x + 2 = 0
11) 2x² - 7x = 15
12) 4x² + 9 = 12x
13) x² = x + 12
14) 2x² = -12x - 18
15) x² + 9 = 4x
16) 25x² = 20x – 4
17) 2x = 15 – x²
18) x² + 3x – 6 = -8
19) x² + x – 7 = 5
20) 4x² - x + 1 = x + 3x²
21) 3x² + 5x = -x – 9 + 2x²
22) 4 + x ( x - 4) = x
23) x ( x + 3) – 40 = 0
24) x² + 5x + 6 = 0
25) x² - 7x + 12 = 0
26) x² + 5x + 4 = 0
27) 7x² + x + 2 = 0
28) x² - 18x + 45 = 0
29) -x² - x + 30 = 0
30) x² - 6x + 9 = 0