a.(5^x)^2+5^x+1 -6=0 呢題有個5^x+1 之後跟住係-6唔
連埋5既次方
b. 1/x-3 -x/x+2=1 呢條都唔識
唔知係唔係感計1(x+2)-x(X-3)/(x-3)(x+2)=1
1(x+2)-x(x-3)=(x-3)(x+2)應該係感但係之後又唔識
c.x^8-7x^4-144=0 之後我諗應該係感做
(x^4+9)(x^4-16)跟住都唔識
唔該曬你地既請教
有冇人可以教下我解方程~q
2007-12-14 3:59 am
回答 (2)
2007-12-14 4:29 am
✔ 最佳答案
As follows: 圖片參考：http://i238.photobucket.com/albums/ff245/chocolate328154/Maths035.jpg?t=1197548935
參考: My Maths Knowledge
2007-12-18 4:16 am
a) 0
c) 2
c) 2
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071213000051KK03067