Author Topic: how do we get, add, use and program latex :S (Read 1498 times) Tweet Share

hard · « **on:** July 21, 2008, 11:30:44 pm »

please help.
oh yes and can you help me with this question.

Find a when the remainder = 0 at x-2

P(x) = x^3 + x^2 - 2a(x) + a^2

this is what i've done so far.

8 = 12 - 2(a)2 +a^2

and then i moved the 12 over to minus it from the 8 but i'm not sure how to get rid of the squared part of the a. please help. easy question btw.

Ahmad · « **Reply #1 on:** July 21, 2008, 11:56:38 pm »

http://vcenotes.com/forum/index.php/topic,864.0.html

Collin Li · « **Reply #2 on:** July 22, 2008, 01:34:46 am »

Quote from: hard on July 21, 2008, 11:30:44 pm

8 = 12 - 2(a)2 +a^2

and then i moved the 12 over to minus it from the 8 but i'm not sure how to get rid of the squared part of the a. please help. easy question btw.

$8 = 12 - 4a + a^2$

$\implies a^2 - 4a + 4 = 0$ --- (1)

$\implies (a-2)^2 = 0$

$\implies a = 2$

Or, you could have just used the quadratic formula on (1)

hard · « **Reply #3 on:** July 22, 2008, 05:18:00 pm »

thanx alot coblin, and thanx ahmad also.

Mao · « **Reply #4 on:** July 22, 2008, 05:21:01 pm »

Quote from: Betty on July 21, 2008, 11:56:38 pm

http://vcenotes.com/forum/index.php/topic,864.0.html

mmm there's also http://vcenotes.com/forum/index.php/topic,3137.msg37375.html#msg37375
found in the root Mathematics forum

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Author Topic: how do we get, add, use and program latex :S (Read 1498 times) Tweet Share

hard

how do we get, add, use and program latex :S

Ahmad

Re: how do we get, add, use and program latex :S

Collin Li

Re: how do we get, add, use and program latex :S

hard

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Mao

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