用因式分解的办法做简便计算(1)22.4^2-27.6^2(2)2.03*2.5+4.83*2.5+3.14*2.5(3)1.25*14^2-125*8.6^2(4)102^2-2*(100^2-2^2)+98^2(5)27*1.8^2-12*1.2^2(6)(1-1/2^2)(1-1/3^2)(1-1/4^2)……(1-1/2008^2)
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![用因式分解的办法做简便计算(1)22.4^2-27.6^2(2)2.03*2.5+4.83*2.5+3.14*2.5(3)1.25*14^2-125*8.6^2(4)102^2-2*(100^2-2^2)+98^2(5)27*1.8^2-12*1.2^2(6)(1-1/2^2)(1-1/3^2)(1-1/4^2)……(1-1/2008^2)](/uploads/image/z/959625-9-5.jpg?t=%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E7%9A%84%E5%8A%9E%E6%B3%95%E5%81%9A%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%EF%BC%881%EF%BC%8922.4%5E2-27.6%5E2%EF%BC%882%EF%BC%892.03%2A2.5%2B4.83%2A2.5%2B3.14%2A2.5%EF%BC%883%EF%BC%891.25%2A14%5E2-125%2A8.6%5E2%EF%BC%884%EF%BC%89102%5E2-2%2A%28100%5E2-2%5E2%29%2B98%5E2%EF%BC%885%EF%BC%8927%2A1.8%5E2-12%2A1.2%5E2%EF%BC%886%EF%BC%89%281-1%2F2%5E2%29%281-1%2F3%5E2%29%281-1%2F4%5E2%29%E2%80%A6%E2%80%A6%281-1%2F2008%5E2%29)
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