Ecuația de gradul 2

Ecuația de gradul 2

8th - 9th Grade

12 Qs

quiz-placeholder

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Ecuația de gradul 2

Ecuația de gradul 2

Assessment

Quiz

Mathematics

8th - 9th Grade

Practice Problem

Hard

Created by

Mihaela Pricop

Used 64+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Soluțiile ecuației  x27x+12=0x^2-7x+12=0  sunt :

 x1=2, x2=5x_1=2,\ x_2=5  

 x1=3, x2=4x_1=3,\ x_2=4  

 x1=3, x2=4x_1=-3,\ x_2=4  

 x1=6, x2=1x_1=6,\ x_2=-1  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Suma soluțiilor ecuației  x28x+16=0x^2-8x+16=0  este egală cu :

- 4

2

8

16

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Descompusă în factori expresia:  3x25x23x^2-5x-2  este:

(x-2)(3x-1)

(x+2)(3x-1)

(x-2)(3x+1)

(x-2)(x+ 13\frac{1}{3}  )

4.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

O ecuație de gradul II nu are soluții reale dacă delta este

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Solutiile reale ale ecuatiei

 x2x^2  = 5
sunt:

 5 \sqrt{5\ }  si  5-\sqrt{5}  

-5 si 5

25 si -25

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

x2-7x-8=0 Coeficientul a este

0

1

-7

-8

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

x2-7x-8=0 Coeficientul c este

1

8

-7

-8

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