Równanie kwadratowe

Równanie kwadratowe

9th - 12th Grade

21 Qs

quiz-placeholder

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Równanie kwadratowe

Równanie kwadratowe

Assessment

Quiz

Mathematics

9th - 12th Grade

Practice Problem

Hard

Created by

Lucyna Sosnowska

Used 316+ times

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21 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Rozwiąż równanie:
 9x24=09x^2-4=0  

 x=23x=\frac{2}{3}  

 x=23x=-\frac{2}{3}  

 x=32x=\frac{3}{2}  

 x=32x=-\frac{3}{2}  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Wzór na deltę (wyróżnik) równania kwadratowego  to:

Δ = b2+4ac\Delta\ =\ b^2+4ac

Δ = b2 4ac\Delta\ =\ b^2\ -\ 4ac

Δ = b 4ac\Delta\ =\ b\ -\ 4ac

Δ= b + 4ac\Delta=\ b\ +\ 4ac

Δ= b2 4a\Delta=\ b^2\ -\ 4a

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Równanie   ax2+bx+c=0\ ax^2+bx+c=0 nie ma rozwiązań, gdy

 gdy delta jest ujemna

 zawsze ma jakieś rozwiązanie

gdy delta jest dodatnia

 gdy delta=0

 gdy a+b+c=0

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Jeśli  a=1, b=5, c=6a=-1,\ b=-5,\ c=6  to  Δ=\Delta=  

1

54

49

-49

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Rozwiązanie równania x2 + 2x = 0 to:

x = 0 lub x = 2

x = 0 lub x = −2

x = 2

x = −2

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Rozwiązanie równania x2 − 9 = 0 to:

x = 3

x = -3 lub x = 3

x = 0 lub x = 3

x = 9

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Postać ogólna funkcji kwadratowej to:

y=ax+bx+cy=ax+bx+c

y=ax+b+cy=ax+b+c

y=ax2+bx2+cy=ax^2+bx^2+c

y=ax2+bx+cy=ax^2+bx+c

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