Math Is Fun Forum

Krishnamr

Member

Registered: 2011-07-05

Posts: 6

Polynomial

can you help me solve this polynomial:
if A + B + C = 9, A2 + B2 + C2 = 35, find the value of A3 + B3 + C3 - 3ABC. pl explain the solution.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Polynomial

hi Krishnamr

I'm thinking you mean:

Find

So far I've started with

Not quite there yet.

Bob

Last edited by Bob (2011-07-05 21:25:19)

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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

Krishnamr

Member

Registered: 2011-07-05

Posts: 6

Re: Polynomial

That's right, pl explain, thanks

123ronnie321

Member

Registered: 2010-09-28

Posts: 128

Re: Polynomial

Hi Krishnamr,

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Polynomial

hi Krishnamr

Just checking the arithmetic ....  Yes, I think it's all OK. 

Bob

Last edited by Bob (2011-07-05 22:51:43)

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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

Krishnamr

Member

Registered: 2011-07-05

Posts: 6

Re: Polynomial

thanks a lot, really helpful, thanks

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Polynomial

You're welcome.

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