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#1 2012-09-24 23:01:24

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 15,091
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Remainder Theorem

If r and s be the remainders when the polynomial

and
are divided by (x+1) and (x-2) respectively and 2r + s = 6
Then find the value of a

P.S: Sorry it should have been x + 1

Is the answer 2 or something else?

Last edited by Agnishom (2012-09-24 23:34:59)


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#2 2012-09-24 23:23:24

bob bundy
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Registered: 2010-06-20
Posts: 6,259

Re: Remainder Theorem

put x = -1

Do a similar thing for the other and then substitute into the equation for r and s to get a

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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#3 2012-09-24 23:35:46

Agnishom
Real Member
From: The Complex Plane
Registered: 2011-01-29
Posts: 15,091
Website

Re: Remainder Theorem

I just edited the last post there were errors
I am sorry for that


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'Humanity is still kept intact. It remains within.' -Alokananda

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#4 2012-09-24 23:54:25

bob bundy
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Registered: 2010-06-20
Posts: 6,259

Re: Remainder Theorem

No worries.  I've edited post 2 for this.

I make it a = -4/10  and I've checked it back in the cubics. 

Maybe you should post your expressions for r and s.

Bob


You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei

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