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/sci/ - Science & Math

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>> No.2536138 [View]
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2536138

>>2536119
my face when those two posts didnt even show up in the thread cause they were already filtered

>> No.2127027 [View]
File: 94 KB, 522x642, 1290331931022.jpg [View same] [iqdb] [saucenao] [google]
2127027

>>2126993
oh tripfag, you card.

>> No.2098463 [View]
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2098463

Cool. Looks like I've got more simulatatings to do.

>> No.1915579 [View]
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1915579

There's a problem on purplemath.com that I was unable to solve.I'm not sure how they came out with their answer.

This is the problem

3x+5/x+2 - x+1/2-x - 4x^2 - 3x - 1/x^2 + 3x - 10

My solution: -2(x^2+3x+3)/(x+5)(x-2)

Their solution: 4(2x-1)/(x+5)(x-2)

I looked over their steps and for some reason they changed the second fraction from negative to positive.How did they do this? Also was my answer correct or was theres?

heres the link to the problem btw

http://www.purplemath.com/modules/rtnladd3.htm

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