>
数学
>
将(x
2
-x-6)(x
2
+3x-4)+24分解因式得 ___ .
人气:197 ℃ 时间:2020-04-02 02:15:15
解答
(x
2
-x-6)(x
2
+3x-4)+24
=(x-3)(x+2)(x-1)(x+4)+24
=(x-3)(x+4)(x-1)(x+2)+24
=(x
2
+x-12)(x
2
+x-2)+24
=(x
2
+x)
2
-14(x
2
+x-2)+48
=(x
2
+x-6)(x
2
+x-8)
=
(x+3)(x-2)(x+
1+
33
2
)(x+
1-
33
2
)
.
故答案为:
(x+3)(x-2)(x+
1+
33
2
)(x+
1-
33
2
)
.
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