Have an account?
Skip to Content
Build your own quiz
Mathematics
8th
grade
DIGITALIADA VIII. Calcule cu numere reale prin litere
15 questions
Show Answers
See Preview
- 1. Multiple Choice
x + 2x + 3x = ...
6x
5x
5x3
6x3
- 2. Multiple Choice
3a - 6a + 2a = ...
-5a
-a
a2
5a
- 3. Multiple Choice
7a + 2b -2a + 5b = ...
5a +3b
9a + 7b
5a + 7b
12ab
- 4. Multiple Choice
x + 5 + 3x + 2x2 - 8 - 7x2 = ...
9x2 + 4x +13
-5x4
-3 + 4x - 5x2
x - 5x2
- 5. Multiple Choice
3x ∙ (4x – 3) – 2 ∙ (5 – 3x) = ...
12x2 - 3x - 13
9x - 13
12x2 - 15x - 10
12x2 - 3x - 10
- 6. Multiple Choice
(2x – 3) ∙ (5x – 2) = ...
10x2 - 19x + 6
10x2 + 6
10x2 - 6
10x - 6
10x + 6
- 7. Multiple Choice
(3x – 2)2 = ...
9x2 - 4
9x2 - 12x + 4
9x2 + 4
9x2 - 12x - 4
- 8. Multiple Choice
(5x + 3) ∙ (5x – 3) = ...
25x2 - 30x + 9
25x + 9
25x2 - 9
25x - 9
- 9. Multiple Choice
4x2 + 12x + 9
descompus în factori:
(4x+9)2
(2x-3)2
(2x+3)2
(2x+3) ∙ (2x-3)
- 10. Multiple Choice
4x∙(3x – 2) – 5∙(3x – 2)
descompus în factori:
(3x - 2) ∙ 4x
2x2 - 23x + 10
(3x - 2) ∙ (4x + 5)
(3x - 2) ∙ (4x - 5)
(3x - 2) ∙ 5
- 11. Multiple Choice
(3x – 2)2 – 25
descompus în factori:
(3x - 7) ⋅ (3x + 3)
(3x - 27)2
(3x - 27) ⋅ (3x + 23)
9x2 -12x - 21
- 12. Multiple Choice
49 – 36x2
descompus în factori:
13x2
7 - 6x
(7 - 6x) ⋅ (7 + 6x)
(7 - 6x)2
- 13. Multiple Choice
25a3b2c4 – 10a4b3c2 + 15a4b5c3
descompus în factori:
a3b2c2 ⋅ (25a2c2 - 10a2b + 15a2b3c)
10a4b5c4 ⋅ (15ab3 - b2c3 + 5c)
30a3b4c5
5a3b2c2 ⋅ (5c2 - 2ab + 3ab3c)
- 14. Multiple Choice
(5x – 2)2 – (3x + 5)2
descompus în factori:
(3x + 3)2
(2x - 7) ⋅ (8x + 3)
(5x - 2) ⋅ (3x + 5)
(3x - 2) ⋅ (2x + 5)
- 15. Multiple Choice
2x3 – 4x2 – 3x + 6
descompus în factori:
(x2 - 3) ⋅ (x + 2)
(2x2 + 1) ⋅ (3x - 2)
2 ⋅ (x3 - 2x2 + 3)
(2x2 - 3) ⋅ (x - 2)
- Answer choicesTagsAnswer choicesTags