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Algebra-8

Authored by Enikő Szász

Mathematics

7th - 9th Grade

Used 3+ times

Algebra-8
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Határozzátok meg az aránypárban az x számot:

 37=x28\frac{3}{7}=\frac{x}{28}  

x=12

x=4

x=7

x=21

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mennyibe kerül 6 m szövet, ha 7 m szövet ára 105 lej?

80 lej

75 lej

90 lej

89 lej

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 83(512)0=8-3\cdot\left(\frac{5}{12}\right)^0=  

 2512\frac{25}{12}  

5

8

 112\frac{1}{12}  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (a b)2=\left(a\ -b\right)^2=  

 a2  b2a^2\ -\ b^2  

 a2 + 2ab  b2a^2\ +\ 2ab\ -\ b^2  

 a2  2ab + b2a^2\ -\ 2ab\ +\ b^2  

 a22abb2a^2-2ab-b^2  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 (232)(23+2)=\left(2\sqrt{3}-\sqrt{2}\right)\left(2\sqrt{3}+\sqrt{2}\right)=  

2

12

8

10

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt


 4x29y22x3y\frac{4x^2-9y^2}{2x-3y}  egyszerűsített alakja:

2x-3y

Nem tudom

2x+3y

2x2+3y2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Egyszerűsítsd a törtet:  8a72a9\frac{8a-72}{a-9}  

 8a8a  

 88  

 a9a-9  

 aa9\frac{a}{a-9}  

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