Please, see the attached document, for I was unable to write it using Latex.

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- Nov 28th 2008, 04:27 AMAlienis BackI don't know where to stop...!!!
Please, see the attached document, for I was unable to write it using Latex.

- Nov 28th 2008, 05:04 AMmr fantastic
The question is:

How to solve .

The approach you're trying to use is completing the square. You've done well to get to here:

.

Unfortunately you then proceed to undo all this, effectively going in a circle and arriving back to .

Here is what you must do. Divide both sides of by 9:

which is clearly a difference of two squares.

From your previous posts I know that you (should) know how to factorise this and hence get the solution. - Nov 28th 2008, 05:24 AMgreat_math
How to solve http://www.mathhelpforum.com/math-he...1ed212fd-1.gif.

A better approach...

Multiply a 4 to LHS and RHS

It becomes