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

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

1. 
   - - 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= -1 , c= -1 #1 -36 #2 -1 #3 -144 #4 648 #5 0
   
3. 
   Tenglamani yeching: x²-2x=0
   

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

4. 
   Tenglamani yeching: x²-16=0
   

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

5. 
   a va b sonlari orasiga >, < yoki = belgilaridan birini to’g’ri munosabat hosil bo’lishini topish sonlarni … deyiladi. #1 darajaga ko’tarish #2 ildiz chiqarish #3 taqqoslash #4 Hammasi to’g’ri #5 TJY
   
6. 
   Sonlarni taqqoslang: 0,6 va
   

#1 > #2 = #3 < #4 Taqqoslab bo’lmaydi #5 TJY

7. 
   a>b va c<0 bo’lsa,ac va bc uchun to’g’ri tengsizlikni toping #1 acbc #4 ac=bc #5 ac bc
   
8. 
   Agar 2b-3a < 3b-4a bo’lsa, u holda … bo’ladi #1 a>b #2 a
9. 
   Agar 2b-3a > 3b-4a bo’lsa, u holda … bo’ladi #1 a>b #2 a
10. 
    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>
    
11. 
    Agar a>b va c>d bo’lsa a+c va c+d ni taqqoslang
    

#1 a+c v= c+d#2 a+c c+d #3 a+c < c+d #4 a+c > c+d #5 TJY

12. 
    Tengsizliklarni qo’shing: 3x+y<2x+1 va 3y-2x<14-2x
    

#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

13. 
    Tengsizliklarni ko’paytiring: 6
    

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

14. 
    Tengsizlikni qanoatlantiruvchi eng kata butun sonni toping: x< -8 #1 -9 #2 -8 #3 -1 #4 24 #5 -20
    
15. 
    Tengsizlikni qanoatlantiruvchi eng kata butun sonni toping: x< -19 #1 -9 #2 -8 #3 -1 #4 24 #5 -20
    
16. 
    =0 funksiyaning ildizi qaysi javobda togri korsatilgan? #1 {0,5;3}#2 {-0,5;3} #3 x=0,5#4 x=3#5 x= -3
    

_17. 3x  2 _ 2x 1

tengsizlikni yeching

4 3

#1 #2 x -10 #3 x -2#4 x>3 #5 togri javob keltirilmagan

18. 
    0 tengsizlikni yeching.
    

#1 (- ;1)U(2; )#2 [1;2)#3 (1;2)#4 (2;+ )#5 (- ;1]U(2;+ )

18. 
    tengsizlikni e'ng katta va e'ng kichik butun yechimlari yigindisini toping.
    
19. 
    0< qo’sh tengsizlikni yeching
    
20. 
    a ning qanday qiymatlarida ax-y=0
    

x+y=10 tenglamalar sistemasi yechimga ega bo’lmaydi? 22.

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

 x _{ 1} 3

23. 
    0 tengsizlikni qanoatlantiruvchi x ning eng kichik musbat butun yechimini toping.
    
24. 
    tengsizlikni qanoatlantiruvchi eng kata musbat butun sonni toping
    
25. 
    tengsizlikning eng katta va eng kichik butun yechimlariyig’indisini toping