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

Algebra VIII-sinf.III chorak testi. D-variant

1. 
   Ifodani soddalashtiring: 12
   

 ¹ 120  2

2

#1 #2 3

#3 2

#4 10,5 #5 to’g’ri javob yo’q

2. 
   Ifodani soddalashtiring: (3
   

8  9

 0,2

50) : (2

#1 -10 #2 10 #3 10

3. 
   Hisoblang: 
   

#4 -10

_#5 10

2

#1 1 #2

9

9  2 20
#3 ⁹ #4 2 #5 9

29

4. 
   ^x1 ^{va x}2 ^{x2+x-5 tenglamaning ildizlari ekanligi ma'lum. + ning qiymatini toping.} #1 10#2 12#3 11#4 9#5 8
   
5. 
   x²+px+q²=0 (q 0) tenglama ning qanday qiymatlarida haqiqiy ildizlarga ega emas? #1 [0;2]#2 (0;2]#3 [-2;2]#4 (-2;0) #5 (-2;2)
   
6. 
   ^{x2+2x+1=0 tenglamaning ildizlari x}1 ^{va x}2 ^{bo'lsa - ni hisoblang} #1 1#2 3#3 4 #4 0 #5 -2
   
7. 
   y⁴-2y²-8=0 tenglamaning haqiqiy ildizlari ko'paytmasini aniqlang. #1 4#2 16#3 -16 #4 -4 #5 64
   

8. 
   Tenglamani yeching: x²-11=0. #1 x=
   
9. 
   Kvadrat tenglamani yeching: x²+x-6=0
   

^{#1 x}1^{=-3, x}2^{=2 #2 x}1^{=3, x}2^{= -2 #3 x}1,2<sup>=  6

#2 x</sup>1,2^{=  #3 x=-
#4 x}1^{=-2, x}2^{= -3 #5 x}1,2^{=  3}

#4 x= ¹¹ #5 TJY

2

10. 
    ^{x2+6x+q=0 kvadrat tenglamaning x}1 ^{va x}2 ^{ildizlari x}2^=2x1 ^{shartni qanoatlantiradi.q ni toping} #1 8 #2 -2 #3 -4 #4 -6 #5 10
    
11. 
    ^{x2+6x+q=0 kvadrat tenglamaning x}1 ^{va x}2 ^{ildizlari x}2^=2x1 ^{shartni qanoatlantiradi.Ildizlari ko’paytmasini toping} #1 8 #2 -2 #3 -4 #4 -6 #5 10
    
12. 
    ^{x2+px+3=0 kvadrat tenglamaning x}1 ^{va x}2 ^{ildizlari x}2^=3x1 ^{shartni qanoatlantiradi. Ildizlari yig’indisini toping} #1 #2 #3 #4 10 #5 3
    
13. 
    ^{3x2-8x-15=0 tenglama berilgan.x}1 ^{va x}2 ^{ildizlari bo’lsa ni toping} #1 - #2 17 #3 3 #4 32 #5
    
14. 
    Umumiy kvadrat tenglama ildizlari formulasini toping:
    

^{#1 x=0 #2 x}1,2^{= #3 #4 #5 x= -}

15. 
    x²+px+q=0, p,q berilgan sonlar , x esa noma’lum ko’rinishidagi tenglama…tenglama deyiladi #1 Bikvadrat #2 kvadrat #3 chiziqli #4 keltirilgan kvadrat #5 kasr-ratsional
    
16. 
    Ildizlari 4 va 8 bo’lgan kvadrat tenglama tuzing:
    

#1 x²-8x-20=0, #2 x²-12x+32=0 #3 x²-4x-5=0 #4 x²+7x+12=0 #5 x²-2x-15=0

17. 
    Kvadrat uchhadni ko’paytuvchilarga ajrating: x²-5x+6
    

#1 (x-2)(x-3) #2 (x-1)(x+5) #3 (x-3)(x+8) #4 (x+0,5)(x-1) #5 (x+7)(x-6)

18. 
    Kvadrat uchhadni ko’paytuvchilarga ajrating: x²+x-42
    

#1 (x-2)(x-3) #2 (x-1)(x+5) #3 (x-3)(x+8) #4 (x+0,5)(x-1) #5 (x+7)(x-6)

19. 
    x²+5x-6=0 kvadrat tenglamani kichik ildizini katta ildiziga nisbatiga qarama-qarshi sonni toping
    
20. 
    x²-px+8=0 tenglamaning ildizlaridan biri 4 ga teng.Bu tenglamaning kata ildizini kichik ildiziga nisbatini toping
    
21. 
    2x²+x-a=0 tenglamaning ildizlaridan biri 2 ga teng. Bu tenglamaning kata ildizini kichik ildiziga nisbatini toping
    
22. 
    p ning qanday qiymatlarida x²+px+15 =0 tenglamaning ildizlaridan biri 15 ga teng bo'ladi?
    
23. 
    ^{x2+2x+1=0 tenglamaning ildizlari x}1 ^{va x}2 ^{bo'lsa x}1^+x2 ^{ni hisoblang}
    
24. 
    (x-1)⁴-5(x-1)² +4=0 tenglamaning ildizlari yig’indisini toping:
    
25. 
    Kasrni qisqartiring: