Algebra viii-sinf. I-chorak test. A-variant

Algebra VIII-sinf.II-chorak test.A-variant

- ko’rinishidagi sonlar( bu yerda m,va n natural sonlar) … sonlar deyiladi #1 Ratsional #2 Musbat kasr #3 Manfiy kasr #4 Natural #5 Butun

2. 
   Ifodaning son qiymatini toping: a³b²c², bunda a= -1 , b= -3 , c= 2 #1 -36 #2 -1 #3 -144 #4 648 #5 0
   
3. 
   Ifodaning son qiymatini toping: a³b²c², bunda a= -1 , b= 3 , c= 0 #1 -36 #2 -1 #3 -144 #4 648 #5 0
   
4. 
   Tenglamani yeching: 3x-x²=0
   

#1 0; 2 #2 0;4 #3 Ildizi yo’q #4 0;3 #5 -4;4

2. 
   Agar a-b ayirma 0 bo’lsa a son b soniga … bo’ladi
   

#1 katta #2 kichik #3 teng #4 Hammasi to’g’ri #5 TJY

2. 
   Sonlarni taqqoslang: 0,1 va #1 > #2 = #3 < #4 Taqqoslab bo’lmaydi #5 TJY
   
3. 
   a>b va c>0 bo’lsa,ac va bc uchun to’g’ri tengsizlikni toping #1 acbc #4 ac=bc #5 ac bc
   
4. 
   Agar 4a-2b > 3a-b bo’lsa, u holda … bo’ladi #1 a>b #2 a
5. 
   Agar 4a-2b < 3a-b bo’lsa, u holda … bo’ladi #1 a>b #2 a
6. 
   3,25<4,25 tengsizlikni ikkala qismini 4 ga ko’paytirish natijasini toping. #1 13<17 #2 -13>-17 #3 -3 <7 #4 3<7 #5 1>
   
7. 
   > tengsizlikni ikkala qismini 4 ga ko’paytirish natijasini toping. #1 13<17 #2 -13>-17 #3 -3 <7 #4 3<7 #5 1>
   
8. 
   Tengsizliklarni qo’shing: 5x+y<2x-1 va 3y-5x<14-2y
   

#1 x+4y< 2x-2y+15 #2 4y<2x-2y+13 #3 x+4y<15 #4 x+y<15 #5 x+y<2x-2y+15

2. 
   Tengsizliklarni ko’paytiring: 2
   

#1 28> 8 #2 25<58 #3 x²-4<4 #4 12< 4x²-1 #5 10x-15<27-36x

2. 
   Tengsizliklarni ko’paytiring: 2x-3< 3- 4x va 5<9
   

#1 28> 8 #2 25<58 #3 x²-4<4 #4 12< 4x²-1 #5 10x-15<27-36x

2. 
   Tengsizlikni qanoatlantiruvchi eng kata butun sonni toping: x 24 #1 -9 #2 -8 #3 -1 #4 24 #5 -20
   

16.2-

1

a ²  1

ifoda a ning istalgan qiymatida ishorasi qanday boladi?

#1 musbat#2 manfiy#3 musbat ham manfiy ham e'mas#4 -1 dan bohsqa ihtiyoriy#5 0 ga teng

17. x ning tengsizlikni qanoatlantiruvchi eng katta butun qiymatini toping. #1 -32#2 -31 #3 -33#4 33#5 31

18. tengsizlikning manfiy butun yechimlari yigindisini toping. #1 -9#2 -5#3 -12 #4 -6#5 -4

19. 
    0 tengsizlikni yeching.
    
20. 
    tengsizlikni yeching.
    
21. 
    Quyidagi sonlarning qaysi jufti
    

x+y=7

x-y= -1 tengsizliklar sistemasini qanoatlantiradi?

19. 
    22.
    

0,2x > -1 tengsizliklar sistemasining yechimlari bo’lgan barcha butun sonlar ko’paytmasini toping.

 x _{ 1} 3

19. 
    tengsizlikning manfiy butun yechimlari ko’paytmasini toping.
    
20. 
    0 tengsizlikni qanoatlantiruvchi x ning eng kichik musbat butun va eng katta manfiy butun yechimlari ko’paytmasini toping.
    

19. 
    tengsizlikni butun yechimlari ko’paytmasini toping.