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题目内容双击单词支持查询和收藏哦～
The net profit that Ann makes from selling x pillows is given by the expression $$x^{2} – 2x – 288.$$
Quantity A
The number of pillows that Ann must sell for her net profit to be zero
Quantity B
20
B显示答案
以上解析由 考满分老师提供。
