问题
解答题
6x2-5xy-6y2+2x+23y-20.
答案
6x2-5xy-6y2+2x+23y-20
=6x2-x(5y-2)-(6y2-23y+20),
=6x2-x(5y-2)-(2y-5)(3y-4),
=(2x-3y-4)(3x+2y+5).
6x2-5xy-6y2+2x+23y-20.
6x2-5xy-6y2+2x+23y-20
=6x2-x(5y-2)-(6y2-23y+20),
=6x2-x(5y-2)-(2y-5)(3y-4),
=(2x-3y-4)(3x+2y+5).