(X²-3X)²-2X²+6X-8,

问题描述:

(X²-3X)²-2X²+6X-8,

(X²-3X)²-2X²+6X-8
=(X²-3X)²-2(X²-3X)-8
=(X²-3X-4)(X²-3X+2)
=(X-4)(X+1)(X-2)(X-1)