Question

25(X-Y)^2+10(y-x)+1

Answer 1

25（x-y） 2 +10（y-x）+1 =[5（x-y）] 2 -2×1×5（x-y）+1 2 =[5（x-y）-1] 2 =（5x-5y-1） 2
记得采纳啊

Answer 2

25(x-y)+10(y-x)+1 =[5(x-y)]-10(x-y)+1 =[5(x-y)-1] =(5x-5y-1)