(x²+5x)²-2x²-10x-24
问题描述:
(x²+5x)²-2x²-10x-24
答
原式=(x²+5x)²-2(x²+5x)+24
=(x²+5x+4)(x²+5x-6)
=(x+1)(x+4)(x+6)(x-1)