Test materiallari

Soddalashtiring

А) 3х-1 B) 3х C) 1-3х D)3х+3 E) x+3

19. ((x-3)/(x+2))≤0 tengsizlikni barcha butun yechimlari yig’indisini toping.

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20. x²+mx-x-m=0 (m=1) tenglama berilgan shu tenglama ildizlari kvadratlarining yig’indisini toping.

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21. Perimetrlari 18sm va 27sm bo’lgan ikkita romb o’zaro gomotetik, bu romblar tomonlari nisbatlarini toping?

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22. Agar sinα=0,5 bo’lsa, cosα, tgα,ctgα ni toping?

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23. (x-3)(x+4)>0 tengsizlikni yeching. __________________________________
24. a ning qanday qiymatlarida ax²-8x-2≤0 tengsizlik x ning barcha qiymatlarida o’rinli bo’ladi?

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25. ABCD trapetsiyada AC dioganal uni o’xshash ABC va ACD uchburchaklarga ajratadi. Bunda

BC=4m AD=9m bo’lsa, AC dioganal uzunligini toping?

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1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
A	D	B	B	D	D	C	A	A	C	C	B	D	D	C	C	D	B

19. 2

20. 2

21. 2/3

22.
23.

24.

25