I know that

1+√5= 3√(2+√5) =1.618033989

2

but what is the math behind it specifically a way to simplify

3√(2+√5) to(Headbang)1+√5

2

Thanks

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- Sep 16th 2008, 08:30 AMSmoriginalhow does this work?
I know that

__1+√5__**= 3√(2+√5) =**1.618033989

**2**

but what is the math behind it specifically a way to simplify

**3√(2+√5) to**(Headbang)__1+√5__

**2**

**Thanks**

- Sep 16th 2008, 08:35 AMSmoriginal
Just to make this clear its

**(****1+√5)/2**which equals**3****√(2+√5)**I hope that is clear.

- Sep 16th 2008, 09:02 AMMoo