Find Positive Square Root of 30

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Discussion Overview

The discussion revolves around finding the positive square root of the expression \(70 - 20\sqrt{30}\). Participants explore the implications of this expression, particularly its potential to yield a real square root.

Discussion Character

  • Homework-related, Mathematical reasoning, Debate/contested

Main Points Raised

  • One participant seeks the positive square root of \(70 - 20\sqrt{30}\).
  • Another participant requests the original poster to share their progress to facilitate better assistance.
  • A third participant indicates that they derived a quadratic equation, which they describe as a dead end.
  • A later reply questions the correctness of the original problem statement, asserting that \(70 - 20\sqrt{30}\) is negative and thus lacks a real square root.

Areas of Agreement / Disagreement

The discussion contains disagreement regarding the nature of the expression \(70 - 20\sqrt{30}\), with one participant suggesting it is negative and another asserting the need to find its square root.

Contextual Notes

Participants have not resolved the implications of the expression being negative, nor have they clarified the assumptions underlying the problem statement.

xclusivzik
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find the positive square root of
70-20\sqrt{30}
 
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Hello and welcome to MHB! :D

We ask that our users show their progress (work thus far or thoughts on how to begin) when posting questions. This way our helpers can see where you are stuck or may be going astray and will be able to post the best help possible without potentially making a suggestion which you have already tried, which would waste your time and that of the helper.

Can you post what you have done so far?
 
i reached a quadratic equation that is kind of my dead end

B square +170b-3000=0
 
xclusivzik said:
find the positive square root of
70-20\sqrt{30}
Are you sure that you have stated the problem correctly? The number $70 - 20\sqrt{30}$ is negative, so it does not have a real square root, positive or negative.
 

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