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Linear and quadratic (Posted on 2007-10-23) Difficulty: 2 of 5
Solve bx + c = 0 for x by means of the quadratic formula.

See The Solution Submitted by Kurious    
Rating: 3.0000 (3 votes)

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re(2): Easy Trick Solution | Comment 3 of 9 |
(In reply to re: Easy Trick Solution by Matt)

You are correct, it would be easier to subtract c from both sides and divide by b.

I think the challenge, however, was in solving the linear equation by an unusual method. Trying to use the quadratic formula on the equation as it is presented gives a=0, which results in an indeterminate rational expression when using the formula. So - something clever needs to be incorporated in order to make the quadratic formula viable and still yield a correct solution to the problem.

 


  Posted by Mike C on 2007-10-23 14:07:30
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