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ecuatia de gradul al 2 lea

Authored by Lavinia Trincu

Mathematics

8th Grade

Used 12+ times

ecuatia de gradul al 2 lea
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Solutia nenula a ecuatiei 2x2+4x=0 este

0

2

-2

4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ecuatia 4x2+12x+9=0 are un nr de ....solutii

0

1

2

infinitate

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

fie ecuatia 2x2-mx+2=0 care admite solutia -1 atunci m este egal cu

-2

2

-4

4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Pentru ecuatia 5x2-7x+2=0 discriminatul ecuatiei este

-89

-37

28

9

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Radacinile reale ale ecuatiei   7x2 +6x 1=07x^{2\ }+6x\ -1=0  

1 si

 17\frac{1}{7}  

-1 si   17\frac{1}{7}  

- 17\frac{1}{7}   si 1 

-1 si - 17\frac{1}{7}  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Fie ecuatia x2+4x +m=0 stiind ca ecuatia admite doua solutii reale distincte atunci m

(;4)\left(-\infty;4\right)


(;4]\left(-\infty;4\right]

(4; \infty )

[4; \infty )

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Valorile lui m pantru care ecuatia x2+mx+1=0 are o singura solutie reala sunt

2 si 4

2 si -2

-2 si 4

0

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