Предмет: Алгебра, автор: remurookidonsky

6. Разложите по формуле бинома Ньютона (2а +3 b)^7 срочно даю 45 баллов ​

Ответы

Автор ответа: laluly769
1

Ответ:

(2a+3b)^7 = 2a^7+7×2a^6×3b+21×2a^5×3b^2+35×2a^4×3b^3+35×2a^3×3b^4+21×2a^2×3b^5+7×2a×3b^6+3b^7=128a+1344ab+6048ab+15120ab+22680ab+20412ab+10206ab+2187b=128a+106110ab+2187b

Объяснение:

(a+b)^7=a^7+7a^6b+21a^5b^2+35a^4b^3+35a^3b^4+21a^2b^5+7ab^6+b^7

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