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

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

1. - ko’rinishidagi sonlar( bu yerda m butun son va n natural son) … 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= 4 #1 -36 #2 -1 #3 -144 #4 648 #5 0
   
3. 
   Tenglamani yeching:4x- x²=0
   

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

2. 
   Agar a-b ayirma musbat bo’lsa a son b sonidan … bo’ladi #1 katta #2 kichik #3 teng #4 Hammasi to’g’ri #5 TJY
   
3. 
   Sonlarni taqqoslang: 0,5 va
   

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

2. 
   Sonlarni taqqoslang: 0,3 va
   

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

2. 
   a>b va c>0 bo’lsa,ac va bc uchun to’g’ri tengsizlikni toping #1 a:cb:c #4 a:c=b:c #5 a:c b:c
   
3. 
   Agar b(2a+1) < a(2b+1) bo’lsa, u holda … bo’ladi #1 a>b #2 a
4. 
   Agar b(2a+1) > a(2b+1) bo’lsa, u holda … bo’ladi #1 a>b #2 a
5. 
   -12< 28 tengsizlikni ikkala qismini 4 ga bo’lish natijasini toping. #1 13<17 #2 -13>-17 #3 -3 <7 #4 3<7 #5 1>
   
6. 
   Agar a>b,c>d va a>0, b>0,c>0, d>0 bo’lsa ac va bd ni taqqoslang #1 ac=bd #2 ac>bd #3 ac bd #4 ac
7. 
   Tengsizliklarni qo’shing: 3x+2y<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

2. 
   Tengsizliklarni ko’paytiring: x-2>1 va x+2>4
   

#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 -8 #1 -9 #2 -8 #3 -1 #4 24 #5 -20
   
3. 
   Quyidagi mulohazalardan qaysilari togri?
   

#1 A)a>0 va b>0 bolsa, a+b>,a*b>0,a/b>0 boladi.#2 B)a>0 va b<0 bolsa , a*b<0, a/b<0, b/a< 0 boladi.

#3 C)Ratsional son deb m/n korinishdagi songa aytiladi: bu yerda n butun,m natural#4 A va B mulohazalar togri #5 A,B va C) mulohazalar togri

2. 
   To’g’ri tengsizlikni tanlang
   

#1 a) 3ab-22ab-2 #3 c)a(a+b)>ab-2#4 b va c javobdagi mulohazalar togri #5 a va b togri

2. 
   x ning qanday qiymatlarida y= 4x-3 funksiyaning qiymati musbat boladi? #1 y>1#2 x>0 #3 x>0,75#4 x>2#5 x<0,75
   
3. 
   tengsizlikni yeching.
   

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

2. 
   tengsizlikning eng katta va eng kichik butun yechimlari ayirmasini toping
   
3. 
   10(ax-1)=2a-5x-9 tenglama a ning qanday qiymatlarida yagona yechimga ega?
   
4. 
   -4<2-4x< -2 qo’sh tengsizlikni yeching.
   

2. 
   tengsizlikning musbat butun yechimlari yigindisini toping.
   
3. 
   0 tengsizlikni qanoatlantiruvchi x ning eng katta manfiy butun yechimini toping.
   
4. 
   tengsizlikni butun yechimlari yigindisini toping.
   
5. 
   Tenglamani yeching: