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2nd - 8th Grade

5 Qs

quiz-placeholder

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Assessment

Quiz

Mathematics

2nd - 8th Grade

Practice Problem

Hard

Created by

THAIS CARLETTO

Used 2+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Desenvolva (x - 2)²

x² + 4

x² + 4x + 4

x² - 4x + 4

x² + 2x + 4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual a expansão correta de (x - 7)² ?

x² - 49
x² + 14x + 49
x² - 14x + 49
x² - 14x - 49

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Determine o valor das multiplicações de polinômios


 3a .  (4a  1)3a\ .\ \ \left(4a\ -\ 1\right)  

 7a  a7a\ -\ a  

 7a + a7a\ +\ a  

 12a² + 3a12a²\ +\ 3a  

 12a²  3a12a²\ -\ 3a  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (7x3).(3x2y)=\left(7x^3\right).\left(3x^2y\right)=  

 21xy21xy  

 21x5y21x^5y  

 21x6y-21x^6y  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Qual o valor da soma algébrica 7a + 3a ?

10a

4a

-4a

-10a

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