solve the equation

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- Sep 6th 2008, 03:11 AMperashsolve
solve the equation

- Sep 6th 2008, 08:16 AMMoo
Hello,

You can notice that

**1. Good (?) method**

Therefore :

or

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

**2. Rough method**

Square both sides :

Multiply by :

Note that -1 is a solution, by looking at the coefficients.

Here, you can use the rational roots theorem... or see that 2 is a solution.

... - Sep 6th 2008, 08:59 AMflyingsquirrel