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Algebarski izrazi i razlomci

Authored by Aleksandra Pletikosic

Mathematics

9th Grade

Used 7+ times

Algebarski izrazi i razlomci
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10 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Algebarski izraz koji predstavlja razliku broja 5 i polovine umnoška brojeva x i y je:

512x+y5-\frac{1}{2}x+y

(512x) y\left(5-\frac{1}{2}x\right)\cdot\ y

512xy5-\frac{1}{2}x\cdot y

512x12y5-\frac{1}{2}x\cdot\frac{1}{2}y

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Vrijednost algebarskog izraza 3t212t33t^2-\frac{1}{2}t^3 ako je   t=1t=-1   jednaka je:

 72-\frac{7}{2}  

 52-\frac{5}{2}  

 52\frac{5}{2}  

 72\frac{7}{2}  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Izračunajte do kraja algebarski izraz  2a23a(a+1)2a^2-3a\left(a+1\right)  
i označite rješenje.

 a23a-a^2-3a  

 a2+3a-a^2+3a  

 a23-a^2-3  

 a2+3-a^2+3  

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

 Koji je od algebarskih izraza jednak izrazu  (x22)2\left(x^2-2\right)^2 ?

 x44x^4-4  

 x4+4x^4+4  

 x42x2+4x^4-2x^2+4  

 x44x2+4x^4-4x^2+4  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Potpuni rastav na faktore algebarskog izraza  8x^2-2  jednak je:

 2(4x21)2\left(4x^2-1\right)  

 2(2x1)22\left(2x-1\right)^2  

 2(2x1)(2x+1)2\left(2x-1\right)\left(2x+1\right)  

 (4x1)(2x+1)\left(4x-1\right)\left(2x+1\right)  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ako je  a+b=\ 2  i  a^2+b^2=10  tada je  ab=a\cdot b=  

-3

5

8

16

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Algebarski razlomak  \frac{6y^3-6y}{9y^2+9y} 

nakon skraćivanja jednak je:

 2y23y+3\frac{2y-2}{3y+3}  

 2y23y3\frac{2y-2}{3y-3}  

 2y23\frac{2y-2}{3}  

 2y3\frac{2y}{3}  

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