3 Questions of Quadratic Equ.

👨🏻‍🏫 學術台數學

[匿名]

2010-09-05 1:58 am

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更新1:

To STEVIE-G™: I dont understand 2a. !!

更新2:

Solved, thz

回答 (1)

STEVIE-G™

2010-09-05 2:16 am

✔ 最佳答案

As follows:

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2010-09-04 18:32:54 補充：
3x²+15x=3x²+15x+3-3=3(x²+5x+1)-3

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