2. Ikki sonning ko’paytmasi 5292 ga teng. Ularning ekuki 252 ga teng bo’lsa ekubini toping

7. ifodani soddalashtiring.

8. (2-a)x²+2(3-2a)x-5a+6 tengsizlik x ning barcha qiymatlarida o’rinli bo’lsa, a ning qiymatini toping.

9. tengsizlikning manfiy butun yechimlari yig’indisini toping.

10. ; qiymatini toping.

11. maxrajini irratsionallikdan qutqaring.

12. (x²+x+1)(x²+x+2)-12=0 tenglamaning ildizlari yig’indisini toping.

13. tenglamaning ildizlari yig’indisini toping.

14. (x+2)²(x-1)³(x-7)⁷ ; tengsizlikni yeching.

15. m va n ning qanday qiymatlarida x³+mx+n ko’phad x²+3x+10 ko’phadga qoldiqsiz bo’linadi.