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Kombinatorika
Binom formulasi(2x+y)4 ifodada qavsni oching. (x-y)5 ifodani yoying. (3x-2y)20 binom yoyilmasida koeffisiyentlar yig`indisi nechaga teng? A) -1 B) 0 C) 1 D) 5 E) 520 63. (2x2-x+1)4(3x-2)5 ko`phadning koeffisiyentlar yig`indisi nechaga teng? A) 128 B) 80 C) 64 D) 40 E) 16 (1+2x)10 binom yoyilmasida hadlarni x ning darajalarini kamayish tartibida joylashtirsak, boshidan to`rtinchi hadning koeffisiyenti nechaga teng? A) 120 B) 210 C) 960 D) 1536 E) 15360 (2x-1)8 yoyilmasida x2 li hadning koeffisiyenti nechaga teng? A) 28 B) 56 C) 96 D) 112 E) 224 (2x2+1)8 ifoda yoyilmasidagi x li 𝑥 hadning koeffisiyenti nechaga teng? A) 28 B) 56 C) 112 D) 224 E) 448 (x2-2)9 yoyilmasidagi ozod had 𝑥 nechaga teng? A) -5376 B) -84 C) 168 D) 84 E) 5376 69. x+y ning qaysi darajadagi yoyilmasida 4- va 12-hadlarining koeffisiyentlari bir-biriga teng bo`ladi? A) 14 B) 15 C) 16 D) 17 E) 18 70. (1+3x)7=1+……+35ax3+….. tenglikda a nechaga teng? A) 135 B) 81 C) 54 D) 27 E) 9 (3√2 + √2)9 binom yoyilmasida ratsional hadlar yig`indisi nechaga teng? A) 1343 B) 1344 C) 1345 D) 1352 E) 1354 (x+y+z)8 yoyilmasidagi x3y2z3 hadining koeffisiyenti nechaga teng? A) 56 B) 76 C) 280 D) 560 E) 1120 Download 28.21 Kb. Do'stlaringiz bilan baham: |
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