x^2*y^2-4x*y^3-4y^4-1因式分解~
问题描述:
x^2*y^2-4x*y^3-4y^4-1因式分解~
答
x^2*y^2-4x*y^3-4y^4-1
=(xy-2y)^2-1
=(xy-2y-1)(xy-2y+1)