Ecuații

Ecuații

7th Grade

6 Qs

quiz-placeholder

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Ecuații

Ecuații

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

Aliona Lascu

Used 4+ times

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6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Numărul –2 este soluţie a ecuaţiei:

x2 + 4 = 0

(x - 2)2 = - 4

(x + 1)(x + 2) = 0

-4x = - 8

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Selectați egalitățile care descriu propoziția : "Numărul 20 este mai mare cu 8 decât numărul x"

8 = 20 + x

20 + 8 =x

20 = x + 8

x = 20 - 8

3.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Care dintre elementele muțimii M = {0; 1; -1; 2} sunt soluții ale ecuației x(x+2) = 0

0

1

-2

2

4.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Subsituiți cele trei puncte cu un număr, astfel încât ecuația obținută să aibă soluția x = -  3 :
...  \cdot  x = -18

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Care este mulțimea soluțiilor pentru ecuația :

x 2 = 9

S = {3}

S = {-3}

S = {-3; 3}

S =

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Care este mulțimea soluțiilor pentru ecuația :

x 2 = -16

S = {4}

S = {-4}

S = {-4; 4}

S =

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