solve the following equation by completing the square(leave your answer in surd form if necessary)
x^2/2 -開方5 -3/4=0
急!!!f.4 math x^2/2 -開方5 -3/4=0
2007-12-13 2:11 am
回答 (1)
2007-12-13 2:47 am
✔ 最佳答案
As follows: 圖片參考：http://i238.photobucket.com/albums/ff245/chocolate328154/Maths032.jpg?t=1197456408
2007-12-12 22:56:02 補充：
I think the Q is x^2/2-sqr5x+3/4=0 but not x^2/2-sqr5+3/4=0.However, if it is really x^2/2-sqr5+3/4=0, then 2x^2 - 4sqr5 - 3=0x^2 = 3/2+2sqr5x =+sqr(3/2+2sqr5) or -sqr(3/2+2sqr5)
參考: My Maths Knowledge
收錄日期: 2021-04-13 14:42:15
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