因式分解4x^2+4/1y^2-2xy-8x+2y+4
问题描述:
因式分解4x^2+4/1y^2-2xy-8x+2y+4
答
4x^2+4/1y^2-2xy-8x+2y+4
=(2x-1/2y)²-4(2x-1/2y)+4
=(2x-1/2y-2)²
1/2表示2分之1