x2+x-2
如題，請快!!!!!
更新1:
x3+x-2
Math homework
回答 (2)
2010-09-17 6:00 am
✔ 最佳答案
x^2 + x - 2= (x^2 - 1) + (x - 1)= (x - 1)(x + 1) + (x - 1)= (x - 1)(x + 2) x^3 + x - 2= x^3 - 1 + x - 1= (x - 1)(x^2 + x + 1) + (x - 1)= (x - 1)(x^2 + x + 2) 
2010-09-17 6:19 am
To 001,How do you think?
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