Question

数学因式分解问题

（X-Y）²-4(X-Y-1)
因式分解~
谢谢~

Answer 1

(X-Y)²-4(X-Y-1)
=(X-Y)²-4(X-Y)+4
=(X-Y-2)²
很容易啊~

Answer 2

=（x-y)^2-4（x-y)+4=（x-y-2)^2

Answer 3

(X-Y)²-4(X-Y-1)
=(X-Y)²-4(X-Y)+4
=(X-Y-2)²

Answer 4

x²-2xy+y²-4x+4y+4

Answer 5

（x-y)^2-4(x-y)+4=(x-y-2)^2

Answer 6

把（x-y）看做整体，同学