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#1 2006-11-27 07:26:06

Kiran
Member
Registered: 2006-11-15
Posts: 177

is this right way

factor

9x^(2n+3)  +  18x^(5n+1)
i did

9*x^n*x^n*x^3 + 9 * 2 *x^n*x^n*x^n*x^n*x^n + x

correct so far?


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#2 2006-12-06 13:00:09

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

Re: is this right way

Maybe you factor out 9x^(2n+1) since they are smaller than 5n and 3 ??


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#3 2006-12-07 08:58:35

LQ
Real Member
Registered: 2006-12-04
Posts: 1,285

Re: is this right way

soha wrote:

factor

9x^(2n+3)  +  18x^(5n+1)
i did

9*x^n*x^n*x^3 + 9 * 2 *x^n*x^n*x^n*x^n*x^n + x

correct so far?

9x^3*x^2n + 18x*18x^5n
=
9x(x^2*x^2n + 36x^5n)
=
9x*x^2n(x^2 + 36x^3n)
=
9x^(2n+1)(x^2 + 36x^3n)

That's what they mean with factor i think.


I see clearly now, the universe have the black dots, Thus I am on my way of inventing this remedy...

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#4 2006-12-09 04:18:11

krassi_holmz
Real Member
Registered: 2005-12-02
Posts: 1,905

Re: is this right way

LQ, right. Just a little mistake:

Last edited by krassi_holmz (2006-12-09 04:21:08)


IPBLE:  Increasing Performance By Lowering Expectations.

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#5 2006-12-09 22:05:37

LQ
Real Member
Registered: 2006-12-04
Posts: 1,285

Re: is this right way

LQ wrote:
soha wrote:

factor

9x^(2n+3)  +  18x^(5n+1)
i did

9*x^n*x^n*x^3 + 9 * 2 *x^n*x^n*x^n*x^n*x^n + x

correct so far?

9x^3*x^2n + x*18x^5n
=            *corrected misstake*
9x(x^2*x^2n + 2x^5n)
=
9x*x^2n(x^2 + 2x^3n)
=
9x^(2n+1)(x^2 + 2x^3n)

That's what they mean with factor i think.

Thank you for showing me that I errored krassi_holmz.


I see clearly now, the universe have the black dots, Thus I am on my way of inventing this remedy...

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#6 2006-12-17 02:45:12

krassi_holmz
Real Member
Registered: 2005-12-02
Posts: 1,905

Re: is this right way

just having fun!


IPBLE:  Increasing Performance By Lowering Expectations.

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