阅读下列材料 因为(a+b)(a-b)=a²-b²,所以a²=(a+b)(a-b)+b²,利用公式可进行速算如:988²=(988+12)(988-12)+12²=1000乘976+144=976144直接写出下列各式的结果(1)97²=();(
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![阅读下列材料 因为(a+b)(a-b)=a²-b²,所以a²=(a+b)(a-b)+b²,利用公式可进行速算如:988²=(988+12)(988-12)+12²=1000乘976+144=976144直接写出下列各式的结果(1)97²=();(](/uploads/image/z/2683925-53-5.jpg?t=%E9%98%85%E8%AF%BB%E4%B8%8B%E5%88%97%E6%9D%90%E6%96%99+%E5%9B%A0%E4%B8%BA%28a%2Bb%29%28a-b%29%3Da%26%23178%3B-b%26%23178%3B%2C%E6%89%80%E4%BB%A5a%26%23178%3B%3D%EF%BC%88a%2Bb%EF%BC%89%EF%BC%88a-b%29%2Bb%26%23178%3B%2C%E5%88%A9%E7%94%A8%E5%85%AC%E5%BC%8F%E5%8F%AF%E8%BF%9B%E8%A1%8C%E9%80%9F%E7%AE%97%E5%A6%82%EF%BC%9A988%26%23178%3B%3D%EF%BC%88988%2B12%EF%BC%89%EF%BC%88988-12%EF%BC%89%2B12%26%23178%3B%3D1000%E4%B9%98976%2B144%3D976144%E7%9B%B4%E6%8E%A5%E5%86%99%E5%87%BA%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E7%9A%84%E7%BB%93%E6%9E%9C%EF%BC%881%EF%BC%8997%26%23178%3B%3D%EF%BC%88%EF%BC%89%EF%BC%9B%EF%BC%88)
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