题目
x*x-y*y+ax+ay的算法
提问时间:2021-03-11
答案
x*x-y*y+ax+ay
=(x+y)(x-y)+a(x+y)
=(x+y)(x-y+a)
=(x+y)(x-y)+a(x+y)
=(x+y)(x-y+a)
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