答案:A
解析:
Since (t - 2)^2 = (t - 2)*(t - 2) = 0, it follows that t - 2 = 0, and so t = 2. Therefore, (t + 3)*(t+6) = (2+3)*(2+6) = (5)*(8) = 40.
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答案:A
解析:
Since (t - 2)^2 = (t - 2)*(t - 2) = 0, it follows that t - 2 = 0, and so t = 2. Therefore, (t + 3)*(t+6) = (2+3)*(2+6) = (5)*(8) = 40.
重點單詞 | 查看全部解釋 | |||
multiple | ['mʌltipl] |
想一想再看 adj. 許多,多種多樣的 |
聯(lián)想記憶 | |
determined | [di'tə:mind] |
想一想再看 adj. 堅毅的,下定決心的 |