
Validação 8º ano - 18/06
Authored by I Felis
Mathematics
8th Grade
Used 10+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A respeito dos produtos notáveis, assinale a alternativa correta.
(x + a)2 = x2 + a2
(x + a)2 = x2 + xa + a2
(x – a)2 = x2 – a2
(x – a)2 = x2 – 2x – a2
(x – a)2 = x2 – 2x + a2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Desenvolva o seguinte produto notável: (x + 3)2
x2 + 6x + 9
x2 + 3x + 6
x2 + 6x - 9
3x2 + 6x + 9
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Desenvolva (a - 5)2
2a2 - 10a + 10
a2 + 10a + 25
2a2 - 10a - 25
a2 - 10a + 25
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Desenvolva o seguinte produto notável: (x + 2) . (x - 2)
x2 - 4x
x2 - 4
x2 - 4x + 16
x2 + 4x
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Observe a figura e escreva uma expressão reduzida (simplificada) que represente a medida da sua área.
x2 - 9
2x - 6
x2 - 6
2x2 - 9
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual a expansão correta de (x + 3)² ?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual a expansão correta de (x - 7)² ?
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