因式分解:x^2-4y^2+4y-1

因式分解:x^2-4y^2+4y-1
2025-01-05 17:49:33
推荐回答(1个)
回答1:

x^2-4y^2+4y-1
=(x-2y)^2-1
=(x-2y+1)(x-2y-1)