Clasa a IX -a

Clasa a IX -a

9th - 12th Grade

10 Qs

quiz-placeholder

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Clasa a IX -a

Clasa a IX -a

Assessment

Quiz

Mathematics

9th - 12th Grade

Practice Problem

Hard

Created by

Tutaș Silvia-Iulia

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care este forma generală a unei ecuații de gradul al II-lea?

a) ax + b = 0

b) ax² + bx + c = 0

c) ax² = c

d) ax² + c = b

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Câte soluții reale poate avea o ecuație de gradul al II-lea?

a) Doar una

b) Întotdeauna două

c) Zero, una sau două

d) Infinit

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Discriminantul unei ecuații de forma ax² + bx + c = 0 este dat de formula:

a) D = b² − 2ac

b) D = b² − 4ac

D = 4ac − b²

D = a² + b²

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Rezolvați ecuația: x² − 5x + 6 = 0

a) x₁ = 1, x₂ = 6

b) x₁ = 2, x₂ = 3

c) x₁ = -2, x₂ = -3

d) x₁ = 5, x₂ = 1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dacă D = 0, atunci ecuația de gradul al II-lea are:

a) Două soluții reale diferite

b) Nicio soluție

c) O soluție reală dublă

d) Două soluții complexe

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Care este soluția ecuației: x² + 4x + 5 = 0?

a) x₁ = -2 + i, x₂ = -2 − i

b) x₁ = 1, x₂ = -5

c) x₁ = -1, x₂ = -4

d) x₁ = 0, x₂ = -5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pentru ce valoare a lui m, ecuația x² + 2mx + m = 0 are o soluție dublă?

a) m = 0

b) m = 1

c) m = 4

d) m = 1

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