因式分解:4-4x²-4y²+8xy
问题描述:
因式分解:4-4x²-4y²+8xy
答
4(1-(x-y)2))=4(1-x+y)(1+x-y)
答
原式=4[1-(x²+y²-2xy)]
=4[1-(x-y)²]
=4(x-y+1)(1-x+y)
=-4(x-y+1)(x-y-1)
答
4-4x²-4y²+8xy=4(1-x^2-y^2+2xy)=4[1-(x^2-2xy+y^2)]=4[1-(x-y)^2]=4(1+x-y)(1-x+y)
答
4-4x²-4y²+8xy
=4-4(x^2-2xy+y^2)
=4-4(x-y)^2
=4(1+x-y)(1-x+y)