因式分解﹙x-y-z﹚²-﹙x+y+z﹚²
问题描述:
因式分解﹙x-y-z﹚²-﹙x+y+z﹚²
答
﹙x-y-z﹚²-﹙x+y+z﹚²
=[﹙x-y-z﹚+﹙x+y+z﹚][﹙x-y-z﹚-﹙x+y+z﹚]
=2x(-2y-2z)
=-4x(y+z)