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Lygtys_įskaita

Authored by Irmantas Grimalauskas

Mathematics

8th - 12th Grade

Used 14+ times

Lygtys_įskaita
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56 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Jei  412x=84^{-1}\cdot2^x=8  , tai  x=x=  

-2

1

2

3

5

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 2x+2x+2x+2x=2^x+2^x+2^x+2^x=  

 22+x2^{2+x}  

 24+x2^{4+x}  

 24x2^{4x}  

 8x8^x  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Rasti lygties sprendinį:

2,4
5
-2,5
-4

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Kuri iš nurodytų lygčių yra tiesinė lygtis?

2x+4x=62x+4\sqrt{x}=6

14x+194x=8x14x+19-4x=8x

2x+x2=42x+x^2=4

2x+4=x3\frac{2}{x}+4=\frac{x}{3}

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Kuris skaičius yra lygties  x23x+8=4x4x^2-3x+8=4x-4  sprendinys?

-4

-1

0

3

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Kuri lygtis neturi sprendinių?

x2+16=0x^2+16=0

4x22=04x^2-2=0

5x2+5=55x^2+5=5

6x2+10=10+6x26x^2+10=10+6x^2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Išspręskite trupmeninę lygtį  8x1+12x+1=4\frac{8}{x-1}+\frac{12}{x+1}=4  

0 ir 5

 5+172 ir 5172\frac{5+\sqrt{17}}{2}\ ir\ \frac{5-\sqrt{17}}{2}  

sprendinių nėra

1 ir 5

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