运用简便方法计算:2013²-2018*2008,62²+58²-62*116
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运用简便方法计算:2013²-2018*2008,62²+58²-62*116
![运用简便方法计算:2013²-2018*2008,62²+58²-62*116](/uploads/image/z/15510778-34-8.jpg?t=%E8%BF%90%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97%3A2013%26%23178%3B-2018%2A2008%2C62%26%23178%3B%2B58%26%23178%3B-62%2A116)
2013²-2018*2008
=2013²-(2013+5)*2008
=2013²-2013*2008-5*2008
=2013*(2013-2008)-5*2008
=2013*5-5*2008
=(2013-2008)*5
=5*5
=25
62²+58²-62*116
=62²-2*62*58+58²
=(62-58)²
=4²
=16
=2013²-(2013+5)*2008
=2013²-2013*2008-5*2008
=2013*(2013-2008)-5*2008
=2013*5-5*2008
=(2013-2008)*5
=5*5
=25
62²+58²-62*116
=62²-2*62*58+58²
=(62-58)²
=4²
=16