x^2-4y^2-2x-4y因式分解

详细的问题说明,有助于回答者给出准确的答案
2024-12-29 16:09:29
推荐回答(3个)
回答1:

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

回答2:

(x-2y-2)(x+2y)

回答3:

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