
Problemas de Matemática
Authored by GEISON LUIZ PAULA DE SALES
Mathematics
9th Grade

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um terreno quadrado tem lados medindo (x + 6) metros. Determine a área deste terreno.
x2 + 36
x2 + 12x + 12
x2 + 12x + 36
x2 + 6x + 36
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considere as expressões:
I. (a + b)2 = (a + b)(a + b)
II. (a + b)2 = a2 + b2
III. (a + b)2 = a2 + 2ab + b2
Então:
Todas estão corretas.
Apenas a afirmativa I está correta.
As alternativas I e II estão corretas.
As alternativas I e III estão corretas.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Determine a área da parte colorida do quadrado:
x2 - 6x - 9
x2 - 6x + 9
x2+ 6x + 9
x2 + 6x - 9
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Aplicando o produto notável corretamente em (2x - 4)2, obtemos:
2x2 - 16
4x2 - 16x - 16
2x2
4x2 - 16x + 16
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das figuras representa a expressão (m+2)(m-2) em relação à área pintada?
a
b
c
d
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A aplicação correta do produto notável na expressão (a - 2b) . (a + 2b) é:
a2 - 2b2
a2 - 4ab + b2
a2 - 4b2
a2 - 4ab + 4b2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Escreva a área do polígono abaixo na forma de trinômio quadrado perfeito:
(a + b)2
(a - b) (a + b)
(a + a)2
(a - b)2
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