因式分解：x²-2xy+y²+10x-10y+25
问题描述：
因式分解：x²-2xy+y²+10x-10y+25
答
x²-2xy+y²+10x-10y+25
=(x²-2xy+y²)+(10x-10y)+25
=(x-y)²+10(x-y)+5²
=(x-y+5)²