22. \( (a-\sqrt{2})^{6} \) binom yoyilmasini yozing.
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**(a - √2)⁶** ni binom yoyish uchun, Binom teoremidan foydalanamiz. Bu teorema ga ko‘ra, \((x + y)^n\) ifodasini yoyishda, har bir terminning koeffitsiyentlari uchun kombinatorik raqamlardan foydalanamiz. Bu holatda, \(a - \sqrt{2}\) ni yozishda \(a\) ning exponenti 6 ga teng, shuning uchun ifoda quyidagicha bo'ladi: \[ \sum_{k=0}^{6} \binom{6}{k} a^{6-k} (-\sqrt{2})^k \] Bu yerda \(\binom{6}{k}\) k-ta terminning kombinatsiyasini anglatadi. Yozganda, natija: \[ a^6 - 6a^5\sqrt{2} + 15a^4 \cdot 2 - 20a^3 \cdot 2^{3/2} + 15a^2 \cdot 2^2 - 6a \cdot 2^{5/2} + 2^3 \] Va xulosa, binomni yoyishdagi eng muhim qadamlar koeffitsiyentlarni hisoblash va har bir terminning eksponentini to'g'ri yo'naltirishdir. Bedenni hisobga olishni unutmang! Bu formulaga asoslanib, yashirin xatolarni tekshirish ham juda muhimdir. Chiroyli koeffitsiyentlar doimiy ko‘rib chiqing!