计算:100²-99²+98²-97²+96²-95²+……+2²-1
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计算:100²-99²+98²-97²+96²-95²+……+2²-1
计算:100²-99²+98²-97²+96²-95²+……+2²-1
计算:100²-99²+98²-97²+96²-95²+……+2²-1
=(100+99)(100-99)+(98+97)(98-97)+(96+95)(96-95)+.+(2+1)(2-1)
=100+99+98+97+96+.+2+1
=(1+100)×100÷2
=5050
50
最后不是1就是0
10000
答案是5050,需要过程么
这真是变态的啊,真心算不来!~~