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2026年9月国际C卷练习 · 第 12 题

2026年9月国际C卷练习 · 原库模块 1 · Q12 参考答案

The area A, in square centimeters, of a rectangular painting can be represented by the expression w(w + 78), where w is the width, in centimeters, of the painting. Which expression represents the length, in centimeters, of the painting?
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