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CIE 9709 2024 June Paper 13 Q1

A Level / CIE / P1

CIE 9709 2024 June Paper 13 Paper · Question 1

题目

Problem

Find the coefficient of x2x^2 in the expansion of

(25x)(1+3x)10.(2 - 5x)(1 + 3x)^{10}.

[4]
题目中文翻译

求展开式

(25x)(1+3x)10(2 - 5x)(1 + 3x)^{10}

x2x^2 的系数。

[4]

解答