Tenglamani yeching: (2x-3)

7-sinf 28.01.2022


1.Soddalashtiring:
A)a B)a⁶ C)a⁹ D)a¹³
2.Tenglamani yeching: (2x-3)² -4x ·(x+5) = -23
A)2 B)1 C)3 D)5
3. Otasi qizidan 22 yosh katta, 4 yildan keyin u qizidan 2 marta katta bo‘ladi. Hozir otasi necha yoshda?
A) 48 B) 44 C) 40 D)48
4.Hisoblang:
A)5 B)1 C)2 D)6
5. Qonuniyatda navbatdagi sonni aniqlang 2, 6, 30, 210, …
A)4080 B)1975 C)1890 D)1960
6.200ning 30% ni 300 ning 40%ga nisbatini toping.
A)0,5 B)0,3 C)0,4 D)0,6
7. Ikki son ayirmasining kvadratini toping. (6a - 4b)² =
A) 36a² – 48ab + 16b² B) 12a² - 8b² C)36a² - 16b²
8.Birhadni standart shaklida yozing:
A)-
9.Ko’paytuvchilarga ajrating: (x-1)² -4
A)(x+1) ·(x-3) B)(x-1) (x-3) C)(x-1) (x+3) D)(x+3) (x+1)
10. Hisoblang.

A)81 B)27 C)9 D)3

11. Ko’phadning yig’indisini toping. (3x² - 2xy - y² ) - (4 x² + 3 xy + 2 y² ) =
A) -x² - 3 xy; B)-x²- 3xy+2y²;
D) -x² - 5xy – 3y²; E) -x² – 3 xy;
12. Ifodaning qiymatini toping: .
A) –0,138; B) 22,9; C) 2,92; D) 2,32.


13. 7 ta kitob va 4 ta jurnalning birgalikdagi bahosi, 4 ta kitob va 7 ta jurnalning birgalikdagi bahosidan 525 so'm ortiq. Kitob jurnalga qaraganda qancha so'm qimmat turishini aniqlang.

A)150 B)175 C)200 D)125


14.Kasrni qisqartiring:
A)3(x+1) B)3(x-1) C)3 D)x+1


15.Hisoblang:
A)0,28 B)28 C)14 D)1,4
16. Ifodani soddalashtiring: 5а – (6а – (7а – (8а - 9))).
A) –2а +9 ; B) 9; C)2а – 9; D) –2а –9.
17. Tenglamani yeching: (10х-3) + (12х-4) = 7 – (15-22х).
A) 0; B) ildizi yo‘q; C)- D) 44.
18. Soddalahtiring: 3a² b - 8b² - 5a²b + 6b² + 3a²b - 2c² =
A) 2 a² b + 4b² – 2 c² B) a ² b - 2 b² – 2 c²
C) 5 a² b² –2 b – 2 c² D)3 a² b - 3 c² – 2 c²
19. Hisoblang: 4 49
A) B) 1 C) D) 1


20. Quyidagi ifodalardan qaysi biri −1 ga teng?
A) ((−1)²)³ B)(−(−1)²)³ C)((−1)³)² D)(−(−1)³)^3a

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