Math Is Fun Forum

planetdomi

Member

Registered: 2011-09-17

Posts: 16

roots

How is the following possible.
I realise I may be being very thick about this but I cant see it

4/√2 = 2x2/√2 = 2x√2 x √2/√2 = 2√2

What am I missing

Bob

Administrator

Registered: 2010-06-20

Posts: 10,583

Re: roots

hi planetdomi

Stay on-line.  I'm just making a reply.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Bob

Administrator

Registered: 2010-06-20

Posts: 10,583

Re: roots

Now you can cancel a root 2

Bob

Last edited by Bob (2011-09-18 07:02:26)

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

planetdomi

Member

Registered: 2011-09-17

Posts: 16

Re: roots

thankyou so much

planetdomi