分解因式:x(x-2)(x+3)(x+1)+8= _ .
问题描述:
分解因式:x(x-2)(x+3)(x+1)+8= ___ .
答
x(x-2)(x+3)(x+1)+8
=(x-2)(x+3)x(x+1)+8
=(x2+x-6)(x2+x)+8
=(x2+x)2-6(x2+x)+8
=(x2+x-2)(x2+x-4)
=(x+2)(x-1)(x-
)(x-1+
17
2
).1-
17
2
故答案为:(x+2)(x-1)(x-
)(x-1+
17
2
).1-
17
2