4x³-4x²y-﹙x-y) 4x³-4x²y-﹙x-y)
问题描述:
4x³-4x²y-﹙x-y)
4x³-4x²y-﹙x-y)
答
4x³-4x²y-﹙x-y)
=4x² ( x - y ) - ( x -y )
=( 4x² -1 ) ( x - y )
= (2x - 1 ) ( 2x + 1 ) (x - y )
答
(4x²-1)(x-y)
答
4x³-4x²y-﹙x-y)
=4x²(x-y)-(x-y)
=(4x²-1)(x-y)
=(2x+1)(2x-1)(x-y)
答
(x-y)(2x+1)(2x-1)