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Ecuatii

Authored by Simona Zepisi

Mathematics

10th - 12th Grade

Used 4+ times

Ecuatii
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5 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Suma solutiilor ecuatiei:

 x210x+9=0x^2-10x+9=0  

10

-10

9

3

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Rezolvati ecuatia:

 log3(3x1)=1\log_3\left(3x-1\right)=1  

2/3

4/3

3/4

1/2

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 log2(x22x+3)=log2(x+1)\log_2\left(x^2-2x+3\right)=\log_2\left(x+1\right)  
Solutiile sunt:

1 si 2

-1 si 2

2 si 3

0 si 1

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Domeniul de existenta pentru logaritmul urmator :

 log5(84x)\log_5\left(8-4x\right)  

 (,2)\left(-\infty,2\right)  

 (,3)\left(-\infty,3\right)  

 (2,)\left(2,\infty\right)  

Multimea numerelor reale

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solutia ecuatiei:

 (log5x)2 2log5x +1=0\left(\log_5x\right)^2\ -2\log_5x\ +1=0  

5

4

3

0

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