1. Tenglamaning ildizlari ko`paytmasini toping?

1.Tenglamaning ildizlari ko`paytmasini toping?
x<sup>36</sup>+124x<sup>19</sup>-3x<sup>5</sup>=24x
A)-24 B)-3 C)0 D)Aniqlab bo`lmaydi
2.(x²-6x)²+3(x-3)²=97 tenglamaning ildizlari yig`indisini toping?
A)-6 B)12 C)ildizga ega emas D)6
3.Tengsizlikni yeching (x<sup>2</sup>+3x-10)
A)[-5;3] B)(- ∞;-5 ]U[2; ∞) C)(- ∞;-5]U[2;3] D)[-5;2]U{3}
4.Hadlari butun sonlardan iborat arifmetik progressiyaning 4 chi va 5chi hadlari ko`paytmasi460 ga, 7chi va 9 chi hadlri yig`indisi 64ga teng. Shu progressiyaning 1chi hadini toping?
A)3 B)20 C)11 D)17
5.Yig`indini hisoblang 17+20+23+26+…+9n+8
A) B)
C) D)3(n-1)(9n+25)
6.Arslon 2yil oldin,Po`lat 3yil keyin tug`ilganida,hozir Arslon Po`latdan 2 marta katta bo`lardi.11 yil oldin Arslonning yoshi Po`latning yoshidan 3 marta katta bo`lgan bo`lsa,Po`latning hozigi yoshini toping.
A)14 B)20 C)30 D)68
7.To`rtta sonning yigindisi 161 ga teng.Ularning dastlabki 4;5 va 8 ga to`g`ri proporsional.Ikkinchi va to`rtinchi sonlar esa 6 va 5 ga teskari proporsional.Uchinchi sonni toping?
A)24 B)42 C)15 D)9
8.Mol belgilangan narxdan 20% chegirma bilan sotilsa,15% zarar qilinadi.Bu zarar 600 so`m ekanligi ma`lum. Mol chegirma qilmasdan oldingi narxini toping.
A)4250 B)4350 C)4400 D)5000

1 Tenglamaning ildizlari ko`paytmasini toping?

x³⁶+14x¹⁹+9x⁵=24x
A)6 B)-3 C)0 D)Aniqlab bo`lmaydi
(x<sup>2</sup>-6x)<sup>2</sup>+4(x-3)<sup>2</sup>=41 tenglamaning ildizlari yig`indisini toping?
A)-6 B)12 C)ildizga ega emas D)6
3.Tengsizlikni yeching (x-2)
A)(- ∞;-1]U[2;5] B)[-1;2]U{5} C)[-1;2] D){-1}U[2;5]
4.Arifmetik progressiyaning birinchi va beshinchi hadlari yig`indisi -2, ikkinchi va uchinchi hadlari ko`paytmasi 4 ga teng bo`lsa, arifmetik progressiyaning birinchi hadi nechiga teng?
A)-8 B)-1 C)-10 D)-7
5.Yig`indini hisoblang.16+19+22+25+…+9n+7
A) B)
C) D(2n-6)(9n+23)
6.Guli Dilfuzaga:<
>-dedi.Dilfuza esa Guliga:<< Sen mening pulimdan 2000 so`m olsang,pulim senikining yarmidan 1000 so`m ko`p bo`ladi>>,-dedi. Dilafruzning qancha buli bor?
A)17000 B)22000 C)26000 D)13000
7.Uchta sonni yig`indisi 188 ga teng.Bu sonlardan birinchisining ikkinchisiga nisbati 4:9, ikkinchisining uchichisiga nisbati 6:7 bo`lsa,bu sonlardan kattasini toping.
A)72 B)84 C)32 D)96
8.Jumaniyozboy ulgurji bozordan kilosi 2000 so`mdan va 3000 so`mdan bo`lgan ikki xil guruch sotib olib, ularni 3:2 nisbattada aralashtirildi. Bu aralsh guruchning kilosini qanchadan sotsa,unga40% foyda tegadi?
A)3080 B)3640 C)3400 D)3360