1.观察下列等式:9-1=816-4=1225-9=1636-16=20.这些等式反映出自然数间的某种规律,设n表示自然数,用关于n的等式表示出来.2..给出下列算式:3²-1²=8=8×15²-3²=16=8×27²-5²=24=8×39²
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![1.观察下列等式:9-1=816-4=1225-9=1636-16=20.这些等式反映出自然数间的某种规律,设n表示自然数,用关于n的等式表示出来.2..给出下列算式:3²-1²=8=8×15²-3²=16=8×27²-5²=24=8×39²](/uploads/image/z/70563-3-3.jpg?t=1.%E8%A7%82%E5%AF%9F%E4%B8%8B%E5%88%97%E7%AD%89%E5%BC%8F%EF%BC%9A9-1%3D816-4%3D1225-9%3D1636-16%3D20.%E8%BF%99%E4%BA%9B%E7%AD%89%E5%BC%8F%E5%8F%8D%E6%98%A0%E5%87%BA%E8%87%AA%E7%84%B6%E6%95%B0%E9%97%B4%E7%9A%84%E6%9F%90%E7%A7%8D%E8%A7%84%E5%BE%8B%2C%E8%AE%BEn%E8%A1%A8%E7%A4%BA%E8%87%AA%E7%84%B6%E6%95%B0%2C%E7%94%A8%E5%85%B3%E4%BA%8En%E7%9A%84%E7%AD%89%E5%BC%8F%E8%A1%A8%E7%A4%BA%E5%87%BA%E6%9D%A5.2..%E7%BB%99%E5%87%BA%E4%B8%8B%E5%88%97%E7%AE%97%E5%BC%8F%EF%BC%9A3%26sup2%3B-1%26sup2%3B%3D8%3D8%C3%9715%26sup2%3B-3%26sup2%3B%3D16%3D8%C3%9727%26sup2%3B-5%26sup2%3B%3D24%3D8%C3%9739%26sup2)
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