TURMA OLÍMPICA NÍVEL II- JIJOCA DE JERICOACORA.

TURMA OLÍMPICA NÍVEL II- JIJOCA DE JERICOACORA.

8th Grade

20 Qs

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TURMA OLÍMPICA NÍVEL II- JIJOCA DE JERICOACORA.

TURMA OLÍMPICA NÍVEL II- JIJOCA DE JERICOACORA.

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Medium

Created by

MARIA XAVIER

Used 1+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

  1. 1) O resultado de (x+z)2 é:

x2+ 2xz - z2

x2 - 2xz + z2

x2 + z2 - 2xz

x2 + 2xz + z2

2.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

2) A expressão algébrica que se adiciona a2 +b2 para obter o quadrado de a-b2 é:

-a2-b2

a2+b2

a2-b2

-2ab2

3.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

3) Qual o número que elevado ao quadrado é 169

13
15
14
12

4.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

4) Calcule (a-b)2 , sendo a e b números reais positivos, e sabendo que a2 + b2 =117 e a.b = 54

36
9
25
16

5.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

5) A diferença de 15222 - 15202 é igual a:

Lembre-se (x+y). (x-y)= x2 -y2

6084
6090
6080
6082

6.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

6) Ao desenvolver o produto (2x+4)2 , encontramos como solução o polinômio:

4x2 + 16x + 16

4x2+ 16

4x2 + 8x + 8

4x + 8

7.

MULTIPLE CHOICE QUESTION

2 mins • 2 pts

7) Se x+y = 13 e x.y = 1, quanto vale x2 +y2?

167
12
14
10

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