Mathematics
Senior High
「升高一銜接數學-因式分解」請問這題有沒有更快的分解方法？我是把-x ²分成-3 x ² +2 x ² ，之後分組再提出公因式，我看答案是對的，但想說應該有更好的方法！在線求解
3 2
x-x-18
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