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October 6th, 2009, 07:55 AM   #1
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Algebra 2 problem

Find the sum of the solution

xsquared + x=6

Please explain the process of solving for the sum of the solution. Thank you very much.
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October 6th, 2009, 08:31 AM   #2
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Re: Algebra 2 problem

Hint: factorise x + x - 6, then set the result equal to zero.
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October 6th, 2009, 09:33 AM   #3
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Re: Algebra 2 problem

You also have your textbook and classroom notes, and Google [quadratic equations] for reference and many examples.
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October 6th, 2009, 02:26 PM   #4
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For any equation of the form ax + bx + c = 0, where a ? 0, the sum of the roots is -b/a, which is -1 for your problem. Similarly, the product of the roots is c/a, but you weren't asked for that.
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October 6th, 2009, 03:02 PM   #5
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Re:

Quote:
Originally Posted by skipjack
For any equation of the form ax + bx + c = 0, where a ? 0, the sum of the roots is -b/a, which is -1 for your problem. Similarly, the product of the roots is c/a, but you weren't asked for that.
You may be right, since "sum" was mentioned, but it was poorly worded by Grove.
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