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

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

1. 
   a sonining arifmetik kvadrat ildizi deb, … a ga teng bo’lgan nomanfiy songa aytiladi
   

#1 kubi #2 kvadrati #3 4-darajasi #4 ildizi #5 10-darajasi

2. 
   Ifodani soddalashtiring: 3
   

 2  3

#1 #2 5 #3 6

#4 12

#5 4

3. 
   Ifodani soddalashtiring: 
   

#1  #2 12(

 2 ) #3 12

#4 12

#5 -12

4. 
   Ikki sonning yig’indisi 35 ga ,ularning ayirmasi esa ga teng.Shu sonlarning ko’paytmasi nechaga teng?
   

#1 31

#2 1 #3

#4 6 #5 35

5. 
   ^{x2+4x-5=0 tenglamaning ildizlari x}1 ^{va x}2 ^{bo'lsa, + ning qiymatini toping} #1 124#2 -125#3 130#4 5#5 -124
   
6. 
   p ning qanday qiymatlarida x²+px+15 =0 tenglamaning ildizlaridan biri 5 ga teng bo'ladi? #1 -4#2 4#3 -2#4 2 #5 -8
   

7. =x+2 tenglamaning nechta ildizi bor?

#1 3 #2 2 #3 1#4 ildizi yo'q#5 cheksiz ko'p

8. 
   5x²-8x+1=0 tenglamaning ildizlari yigindisini toping. #1 #2 1#3 -4 #4 #5 8
   
9. 
   Tenglamani yeching: 3x²=48
   

^{#1 x=4 #2 x=-4 #3 x}1,2^{=  4}

#4 x=8 #5 x=16

8. 
   Kvadrat tenglamani yeching: x²+7x+6=0
   

^{#1 x}1^{=1, x}2^{= -1 #2 x}1^{= -6, x}2^{=-1 #3 x}1^{= -7, x}2^{= -6 #4 x}1^{= -1, x}2^{= -5 #5}

8. 
   ^{x2+6x+q=0 kvadrat tenglamaning x}1 ^{va x}2 ^{ildizlari x}2^=2x1 ^{shartni qanoatlantiradi.x}1 ^{ni toping} #1 8 #2 -2 #3 -4 #4 -6 #5 10
   
9. 
   ^{x2+px+3=0 kvadrat tenglamaning x}1 ^{va x}2 ^{ildizlari x}2^=3x1 ^{shartni qanoatlantiradi.p ni toping.} #1 #2 #3 #4 10 #5 3
   
10. 
    ^{x2+px+3=0 kvadrat tenglamaning x}1 ^{va x}2 ^{ildizlari x}2^=3x1 ^{shartni qanoatlantiradi. Ildizlari ko’paytmasini toping} #1 #2 #3 #4 10 #5 3
    
11. 
    ^{3x2-8x-15=0 tenglama berilgan.x}1 ^{va x}2 ^{ildizlari bo’lsa ni toping} #1 - #2 17 #3 3 #4 32 #5
    
12. 
    ax²+c=0, c 0, c<0, chala kvadrat tenglama ildizlari formulasini toping
    

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

8. 
   ax²=0, a ko’rinishidagi kvadrat tenglama ildizlari formulasini toping
   

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

8. 
   Ildizlari -1 va 5 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

8. 
   Kvadrat uchhadni ko’paytuvchilarga ajrating: x²+4x-5
   

#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)

8. 
   x²+5x-6=0 kvadrat tenglamani kata ildizini kichik ildiziga nisbatini toping
   
9. 
   x²-px+8=0 tenglamaning ildizlaridan biri 4 ga teng.Bu tenglamaning barcha koyeffitsiyentlari ko’paytmasini toping
   
10. 
    2x²+x-a=0 tenglamaning ildizlaridan biri 2 ga teng. a ni toping
    
11. 
    x²+px+q²=0 (q 0) tenglama ning qanday qiymatlarida tenglama bitta ildizga ega?
    
12. 
    p ning qanday qiymatlarida x²+px+15 =0 tenglamaning ildizlaridan biri 10 ga teng bo'ladi?
    
13. 
    ^{x2+2x+1=0 tenglamaning ildizlari x}1 ^{va x}2 ^{bo'lsa - ni hisoblang}
    
14. 
    (x-1)⁴-5(x-1)² +4=0 tenglamaning ildizlari ko’paytmasini toping:
    

1. 
   Hisoblang: (
   

 3)²