Quadratic Inequality: Solving for x | No Quotes

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Homework Help Overview

The discussion revolves around a quadratic inequality problem, where participants are attempting to solve for the variable x based on provided options and their own calculations.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express their solutions and question the validity of the provided options, suggesting that the question may contain errors. They discuss testing various values against the options to verify their correctness.

Discussion Status

There appears to be a general agreement among participants that the options provided are incorrect and that the original poster's solution is valid. Multiple interpretations of the question's accuracy are being explored.

Contextual Notes

Participants note potential typos in the options and express concern over the reliability of the textbook problems, indicating a broader issue with the material being used.

icystrike
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Homework Statement


[/B]
As attached

Homework Equations

The Attempt at a Solution


[/B]
The answer is stated as option A.

However, my solution is -6≤x≤3;
I can seems to find an option that fits the solution.
 

Attachments

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I agree. The question is wrong.
 
Your solution looks solid. There must be a problem with the question. Just trying values in the options show that you are correct.
7: 49 < 18-21 -- Nope.
-7: 48 < 18+21 -- Nope.
4: 16 < 18-12 -- Nope.
etc.
You can rule out all the options on the page.
 
Man, you've been having a string of bad luck with your textbooks containing faulty problems. If the problems are this bad, I wonder if the material is equally flaky?
 
Agreed, those options are wrong (and your solution is correct). There's probably a typo in either B or C.
 

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