观察下列单项式:-2x,5x^2,-10x^3,17x^4,-26x^5,……-2x,5x^2,-10x^3,17x^4,-26x^5,……按此规律,第10个单项式表示为(),第n个单项式表示为()(n为正整数).求讲解,
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![观察下列单项式:-2x,5x^2,-10x^3,17x^4,-26x^5,……-2x,5x^2,-10x^3,17x^4,-26x^5,……按此规律,第10个单项式表示为(),第n个单项式表示为()(n为正整数).求讲解,](/uploads/image/z/8596564-52-4.jpg?t=%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E5%8D%95%E9%A1%B9%E5%BC%8F%EF%BC%9A-2x%2C5x%5E2%2C-10x%5E3%2C17x%5E4%2C-26x%5E5%2C%E2%80%A6%E2%80%A6-2x%2C5x%5E2%2C-10x%5E3%2C17x%5E4%2C-26x%5E5%2C%E2%80%A6%E2%80%A6%E6%8C%89%E6%AD%A4%E8%A7%84%E5%BE%8B%2C%E7%AC%AC10%E4%B8%AA%E5%8D%95%E9%A1%B9%E5%BC%8F%E8%A1%A8%E7%A4%BA%E4%B8%BA%EF%BC%88%EF%BC%89%2C%E7%AC%ACn%E4%B8%AA%E5%8D%95%E9%A1%B9%E5%BC%8F%E8%A1%A8%E7%A4%BA%E4%B8%BA%EF%BC%88%EF%BC%89%EF%BC%88n%E4%B8%BA%E6%AD%A3%E6%95%B4%E6%95%B0%EF%BC%89.%E6%B1%82%E8%AE%B2%E8%A7%A3%2C)
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