C10 1 c^5 c1 b10 b^2 b1 a^31 a^29 a^24 a19

请输入您的数学问题…… C10-1 C^5 C1 B10 B^2 B1 A^31 A^29 A^24 A19

问题

C 10 - 1 C^{5} C 1 B 10 B^{2} B 1 A^{3} 1 A^{2} 9 A^{2} 4 A 19

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