比较下列题中两式值的大小:(t+1)(t-5)与(t-2)^2求详细做法~急!
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![比较下列题中两式值的大小:(t+1)(t-5)与(t-2)^2求详细做法~急!](/uploads/image/z/10248426-18-6.jpg?t=%E6%AF%94%E8%BE%83%E4%B8%8B%E5%88%97%E9%A2%98%E4%B8%AD%E4%B8%A4%E5%BC%8F%E5%80%BC%E7%9A%84%E5%A4%A7%E5%B0%8F%EF%BC%9A%28t%EF%BC%8B1%29%28t%EF%BC%8D5%29%E4%B8%8E%28t%EF%BC%8D2%29%5E2%E6%B1%82%E8%AF%A6%E7%BB%86%E5%81%9A%E6%B3%95%EF%BD%9E%E6%80%A5%21)
比较下列题中两式值的大小:(t+1)(t-5)与(t-2)^2求详细做法~急!
比较下列题中两式值的大小:(t+1)(t-5)与(t-2)^2
求详细做法~急!
比较下列题中两式值的大小:(t+1)(t-5)与(t-2)^2求详细做法~急!
(t + 1)(t - 5) - (t - 2)²
= (t² - 4t - 5) - (t² - 4t + 4)
= t² - 4t - 5 - t² + 4t - 4
= -9 < 0
所以 (t + 1)(t - 5) < (t - 2)²