KVADRATINĖS LYGTYS

KVADRATINĖS LYGTYS

9th Grade

20 Qs

quiz-placeholder

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KVADRATINĖS LYGTYS

KVADRATINĖS LYGTYS

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Romena Amosėjevaitė

Used 28+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 (x  15)  (x+13)=0(x\ –\ 15)\ \cdot\ (x+13)=0  

 x1 = 15; x2 = 13x_1\ =\ 15;\ x_2\ =\ -13  

 x1 = 15; x2 = 13x_1\ =\ 15;\ x_2\ =\ 13  

 x1 = 15; x2 = 13x_1\ =\ -15;\ x_2\ =\ -13  

 x1 = 15; x2 = 13x_1\ =\ -15;\ x_2\ =\ 13  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 y  (y  0,2)=0y\ \cdot\ (y\ –\ 0,2)=0  

 y1 = 0; y2 = 0,2y_1\ =\ 0;\ y_2\ =\ 0,2  

 y1 = 0; y2 = 0,2y_1\ =\ 0;\ y_2\ =-\ 0,2  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Lygties 3x2+7x  8=0 koeficientaiLygties\ 3x^2+7x\ –\ 8=0\ koeficientai  

 a = 3; b = 7; c = 8a\ =\ 3;\ b\ =\ 7;\ c\ =\ -8  

 a = 3; b = 7; c = 8a\ =\ 3;\ b\ =\ 7;\ c\ =\ 8  

 a = 7; b = 3; c = 8a\ =\ 7;\ b\ =\ 3;\ c\ =\ -8  

 a = 8; b = 7; c = 3a\ =\ -8;\ b\ =\ 7;\ c\ =\ 3  

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Lygties x213+25x=0 koeficientaiLygties\ x^2-\frac{1}{3}+\frac{2}{5}x=0\ koeficientai  

 a = 1; b = 25; c = 13a\ =\ 1;\ b\ =\ \frac{2}{5};\ c\ =\ -\frac{1}{3}  

 a = 0; b = 25; c = 13a\ =\ 0;\ b\ =\ \frac{2}{5};\ c\ =\ -\frac{1}{3}  

 a = 1; b = 25; c = 13a\ =\ 1;\ b\ =\ \frac{2}{5};\ c\ =\ \frac{1}{3}  

 a = 1; b = 13; c = 25a\ =\ 1;\ b\ =\ -\frac{1}{3};\ c\ =\ \frac{2}{5}  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 25x2=025x^2=0  

 x = 0x\ =\ 0  

 x = 5x\ =\ 5  

 x = 5x\ =\ -5  

Sprendinių nėra

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 x2+64=0x^2+64=0  

Sprendinių nėra

 x1 = 8; x2 = 8x_1\ =\ -8;\ x_2\ =\ 8  

 x1 = 64; x2 = 64x_1\ =\ -64;\ x_2\ =\ 64  

 x = 0x_{ }\ =\ 0  

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 x2=3649;x^2=\frac{36}{49};  

 x1 = 67; x2 = 67x_1\ =\ -\frac{6}{7};\ x_2\ =\ \frac{6}{7}  

Sprendinių nėra

 x1 = 3649; x2 = 3649x_1\ =\ -\frac{36}{49};\ x_2\ =\ \frac{36}{49}  

 x = 0x\ =\ 0  

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