matematika 9-sinf

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matematika 9-sinf / matematika 9-klass # savol a b c d ball 1. agar 𝑥2 + 𝑦2 = 2 bolsa, 𝑥6 + 𝑦6 + 6𝑥2𝑦2 yig’indini toping. esli 𝑥2 + 𝑦2 = 2 nayti summu: 𝑥6 + 𝑦6 + 6𝑥2𝑦2 12 16 6 8 2 2. (4√6 + √39 + 2√26 + 6)(4√6 + √39 − 2√26 − 6) hisoblang. (4√6 + √39 + 2√26 + 6)(4√6 + √39 − 2√26 − 6) vichislit −15 −6 −5 −10 2 3. 0, (𝑎𝑏𝑎𝑏) davriy kasr 29 33 ga teng bo’lsa, 2𝑎 + 3𝑏 ni toping. (𝑎, 𝑏 − raqamlar). periodicheskaya drob 0, (𝑎𝑏𝑎𝑏) ravna 29 33 . hayti 2𝑎 + 3𝑏. (𝑎, 𝑏 −tsifri) 37 35 29 39 1 4. 𝑛 ning qanday qiymatlarida 𝑓(𝑥) = √𝑥 − 7 − √𝑛 − 4𝑥 − 𝑥2 funksiya aniqlanish sohasi bitta nuqtadan iborat bo’ladi? pri kakom 𝑛 oblast opredeleniya funktsii 𝑓(𝑥) = √𝑥 …

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+ 𝑏𝑐 + 𝑐𝑎 (𝑎 + 𝑏 + 𝑐)2 3(𝑎𝑏 + 𝑏𝑐 + 𝑐𝑎) 3 10. 𝑎 ning qanday qiymatlarida |𝑥−2| 𝑥−2 = (𝑥 − 𝑎)2 tenglama yagona yechimga ega bo’ladi? pri kakix znacheniyax 𝑎, uravnenie |𝑥−2| 𝑥−2 = (𝑥 − 𝑎)2 imeet tolko odno reshenie? (−∞; −3) [3; +∞) (1; 3] (−3; 3] 3 11. 𝐴𝐵𝐶 uchburchakka ichki chizilgan aylana 𝐴𝐵 va 𝐴𝐶 tomonlarga 𝑀 va 𝑁 nuqtalarda urinadi. agar 𝐴𝐵 = 4, 𝐴𝐶 = 3, 𝐵𝐶 = 2 bo’lsa, 𝐴𝑀𝑁 uchburchak yuzini toping. vpisannaya v treugolnik 𝐴𝐵𝐶 okrujnost kasaetsya storon 𝐴𝐵 i 𝐴𝐶 v tochkax 𝑀 i 𝑁 sootvetstvenno. naydite ploshad treugolnika 𝐴𝑀𝑁, esli 𝐴𝐵 = 4, 𝐴𝐶 = 3, 𝐵𝐶 = 2 25√15 64 16√15 27 15√15 16 25√15 32 3 12. 𝑦 = 6,86 3,14 𝑥 + 6,86 3,14 va 𝑦 = 3,14 6,86 𝑥 + 13,14 6,86 to’g’ri chiziqlar (𝑥; 𝑦) nuqtada kesishadi. 𝑦 − …

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tlari yig’indisi eng kichik qiymatni qabul qiladi? pri kakix znacheniyax 𝑎 summa kvadratov korney uravneniya 𝑥2 − 2𝑎𝑥 + 𝑎2 − 6𝑎 − 28 = 0 yavlyaetsya naimenshey. 1 −3 −1 −2 2 19. (𝑥2 − 𝑥 + 1): ((𝑥2 + 𝑥−2)2 + 2(𝑥 + 𝑥−1)2 − 3)0,5 hisoblang, bunda 𝑥 = 0, (6) (𝑥2 − 𝑥 + 1): ((𝑥2 + 𝑥−2)2 + 2(𝑥 + 𝑥−1)2 − 3)0,5 vichislit pri 𝑥 = 0, (6). 9 38 3 19 7 38 4 19 1 20. kitob sahifalarini raqamlash uchun kitob sahifalari sonidan 2 marta ko’p raqam ishlatildi. agar kitob sahifalari 500 tadan kam bo’lsa, sahifalar sonini toping. dlya numeratsii nekotorogo chisla stranits potrebovalos v 2 raz bolshe tsifr chem bilo stranits. skolko bilo stranits, esli eto menshe 500? 111 108 152 153 2

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matematika 9-sinf / matematika 9-klass # savol a b c d ball 1. agar 𝑥2 + 𝑦2 = 2 bolsa, 𝑥6 + 𝑦6 + 6𝑥2𝑦2 yig’indini toping. esli 𝑥2 + 𝑦2 = 2 nayti summu: 𝑥6 + 𝑦6 + 6𝑥2𝑦2 12 16 6 8 2 2. (4√6 + √39 + 2√26 + 6)(4√6 + √39 − 2√26 − 6) hisoblang. (4√6 + √39 + 2√26 + 6)(4√6 + √39 − 2√26 − 6) vichislit −15 −6 −5 −10 2 3. 0, (𝑎𝑏𝑎𝑏) davriy kasr 29 33 ga teng bo’lsa, 2𝑎 + 3𝑏 ni toping. (𝑎, 𝑏 − raqamlar). periodicheskaya drob 0, (𝑎𝑏𝑎𝑏) ravna 29 33 . hayti 2𝑎 + 3𝑏. (𝑎, 𝑏 −tsifri) 37 35 29 39 1 4. 𝑛 …

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