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paupav Master Cheater
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Joined: 15 Apr 2011 Posts: 314 Location: P. Sherman 42, Wallaby Way, Sydney
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Posted: Sun Feb 03, 2013 10:31 am Post subject: any 1 know how to solve |
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Fafaffy Cheater
Reputation: 65
Joined: 12 Dec 2007 Posts: 28
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Posted: Sun Feb 03, 2013 10:47 am Post subject: |
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factor the bottom
get a common denominator (by multiplying all the factors that they don't have)
Now, they should ALL have a common denominator, so you can just erase it, or ignore it.
Now, multiply whatevers left and solve.
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| Brillia wrote: | | I FUCKING FUCK SEX |
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paupav Master Cheater
Reputation: 13
Joined: 15 Apr 2011 Posts: 314 Location: P. Sherman 42, Wallaby Way, Sydney
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Posted: Sun Feb 03, 2013 10:57 am Post subject: |
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| blablfy wrote: | ̷"]factor the bottom
get a common denominator (by multiplying all the factors that they don't have)
Now, they should ALL have a common denominator, so you can just erase it, or ignore it.
Now, multiply whatevers left and solve. |
i did that before but i get wrong solution
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:^( Grandmaster Cheater
Reputation: 109
Joined: 25 May 2007 Posts: 689
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Posted: Sun Feb 03, 2013 10:58 am Post subject: |
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| "paupav" wrote: | | blablfy wrote: | ̷"]factor the bottom
get a common denominator (by multiplying all the factors that they don't have)
Now, they should ALL have a common denominator, so you can just erase it, or ignore it.
Now, multiply whatevers left and solve. |
i did that before but i get wrong solution |
possible you made an error
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Fafaffy Cheater
Reputation: 65
Joined: 12 Dec 2007 Posts: 28
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Posted: Sun Feb 03, 2013 11:35 am Post subject: |
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| TheKreativity wrote: | | "paupav" wrote: | | blablfy wrote: | ̷"]factor the bottom
get a common denominator (by multiplying all the factors that they don't have)
Now, they should ALL have a common denominator, so you can just erase it, or ignore it.
Now, multiply whatevers left and solve. |
i did that before but i get wrong solution |
possible you made an error |
It's the reality.
Also, wolframalpha.com
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gogodr I post too much
Reputation: 125
Joined: 19 Dec 2006 Posts: 2041
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Posted: Sun Feb 03, 2013 1:20 pm Post subject: |
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( (x+3)*(12x^2+3x) - (3x+5)*(8x^2-2x) ) * (16x^2-1) = (8x^2-2x)*(12x^2+3x)*(1-2x)
( (12x^3 +3x^2+36x^2+9x - 24x^3 + 6x^2 - 40x^2 + 10x) * (16x^2 -1)) = (96x^4+24x^3-24x^3-6x^2) * (1-2x)
( (-12x^3 +5x^2+19x) * (16x^2 -1)) = (96x^4-6x^2) * (1-2x)
-192x^6 + 80x^4 + 316 x^3 -5x^2 - 19x = 96x^4 - 6x^2 - 192x^5 + 12x^3
-192x^6 +192x^5 - 16x^4 + 304 x^3 + x^2 - 19x = 0
Last edited by gogodr on Sun Feb 03, 2013 1:30 pm; edited 2 times in total |
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potaters Grandmaster Cheater
Reputation: 72
Joined: 13 Apr 2009 Posts: 969
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(\/)_(;,,;)_(\/) Grandmaster Cheater Supreme
Reputation: 3
Joined: 07 Apr 2008 Posts: 1610
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Posted: Sun Feb 03, 2013 1:27 pm Post subject: |
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| gogodr wrote: | ( (x+3)*(12x^2+3x) - (3x+5)*(8x^2-2x) ) * (16x^2-1) = (8x^2-2x)*(12x^2+3x)*(1-2x)
( (12x^3 +3x^2+36x^2+9x - 24x^3 + 6x^2 - 40x^2 + 10x) * (16x^2 -1)) = (96x^4+24x^3-24x^3-6x^2) * (1-2x)
( (-12x^3 +5x^2+19x) * (16x^2 -1)) = (96x^4-6x^2) * (1-2x) |
stahp
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gogodr I post too much
Reputation: 125
Joined: 19 Dec 2006 Posts: 2041
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Posted: Sun Feb 03, 2013 1:30 pm Post subject: |
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-192x^6 +192x^5 - 16x^4 + 304 x^3 + x^2 - 19x = 0
there, use ruffini to solve that equation.
http://www.wolframalpha.com/input/?i=-192x^6+%2B192x^5+-+16x^4+%2B+304+x^3++%2B+x^2+-+19x+%3D+0
you know what, forget it. I did mess up somewhere.
Last edited by gogodr on Sun Feb 03, 2013 1:35 pm; edited 1 time in total |
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Kurifodo I post too much
Reputation: 23
Joined: 09 Oct 2008 Posts: 2782
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Posted: Sun Feb 03, 2013 1:35 pm Post subject: |
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| Im pretty sure a trained monkey has better handwriting than u lol
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gogodr I post too much
Reputation: 125
Joined: 19 Dec 2006 Posts: 2041
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Posted: Sun Feb 03, 2013 1:39 pm Post subject: |
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trying again
( (x+3)*(12x^2+3x) - (3x+5)*(8x^2-2x) ) * (16x^2-1) = (8x^2-2x)*(12x^2+3x)*(1-2x)
((x+3)*3x(4x+1) - (3x+5)*2x(4x-1) ) * (16x^2-1) = 2x(4x-1)*3x(4x+1)*(1-2x)
-x (4 x-1) (4 x+1) (12 x^2-5 x-19) = -6 x^2 (2 x-1) (4 x-1) (4 x+1)
-16 x^4+304 x^3+x^2-19 x = 0
there
with some help of wolframalpha
x1) -1/4
x2) 0
x3) 1/4
x4) 19
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