25(X-Y)^2+10(x-y)+1?
问题描述:
25(X-Y)^2+10(x-y)+1?
答
25(X-Y)²+10(x-y)+1
=[5(x-y)]²+10(x-y)+1²
=(5x-5y+1)²
答
25(X-Y)^2+10(x-y)+1
=[5(X-Y)]²+10(x-y)+1
=(5x-5Y+1)²