因式分解(x+y)^2+(x+y)-20
问题描述:
因式分解(x+y)^2+(x+y)-20
答
(x+y)^2+(x+y)-20
=(x+y+5)(x+y-4)
因式分解(x+y)^2+(x+y)-20
(x+y)^2+(x+y)-20
=(x+y+5)(x+y-4)