更新1:
Answer:16/15
F.4 Maths
2013-10-15 1:10 am
1.Suppose -1 is a root of the quadratic equation 15x^2 - x + c = 0. Find the other root of the equation without finding the value of c.
回答 (2)
2013-10-15 1:56 am
✔ 最佳答案
1.Suppose －1 is a root of the quadratic equation 15x^2－x+c=0，Find the otherroot of the equation without finding the value of c.
Sol
設另一根為p
(－1)+p=-(－1)/15
P－1=1/15
p=16/15
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https://hk.answers.yahoo.com/question/index?qid=20131014000051KK00179