F.4 數學問題 factor method

2010-10-02 4:23 am
使用factor method解以下方程:

(2x+6)(x-5)=x+3

回答 (1)

2010-10-02 4:34 am
✔ 最佳答案
(2x + 6)(x - 5) = x + 32(x + 3) (x - 5) = x + 32 (x + 3) (x - 5) - (x + 3) = 0(x + 3) [ 2(x - 5) - 1] = 0(x + 3) (2x - 11) = 0x = - 3 or x = 11/2


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