分解因式:1、y(x-y)눀+(y-x)눀 2、(x+1)(x+3)+1

2024-12-28 14:06:36
推荐回答(1个)
回答1:

y(x-y)²+(y-x)²
=(y+1)(x-y)²

(x+1)(x+3)+1
=x^2+4x+3+1
=(x+2)²