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Its sad v.Algebra help

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Old Mar 30, 2009 | 08:33 AM
  #11  
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Originally Posted by Line7
Basically roots are 0's.

IE:

x^2 + 5x + 6 = 0

(x+2)(x+3) = 0

x = -2 , x = -3
If you figured out x = 1, -1, 2, -3

Then you solved x

I dont get what you're asking.
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Old Mar 30, 2009 | 08:39 AM
  #12  
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Originally Posted by Tark
If you figured out x = 1, -1, 2, -3

Then you solved x

I dont get what you're asking.
I got that solution from the back of the book, but it doesnt show how to actually do it. i need the proceedure itself.
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Old Mar 30, 2009 | 08:41 AM
  #13  
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answer:

show me one example in the real world where i will need to apply this for my chosen career path


i bet the prof likes that one
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Old Mar 30, 2009 | 08:50 AM
  #14  
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Originally Posted by JessTD
answer:

show me one example in the real world where i will need to apply this for my chosen career path


i bet the prof likes that one
Well, its not that. This is actually not for an algebra class, this is for a Differential Equations class, which is after Calc 1,2, and 3.

If you would be studying to be an Engineer, like me, I supose you would need it. But then egain, you would not have to solve it by hand...so yeah.
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Old Mar 30, 2009 | 09:07 AM
  #15  
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http://www.algebrahelp.com/
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Old Mar 30, 2009 | 09:29 AM
  #16  
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Originally Posted by k3ifers
You da man! :cheers:

Found what I was looking for.

This is how its done if anyone's interested:

x^4 + x^3 -7x^2 - x + 6 = 0

(x^4 - 7x^2 + 6) + x(x^2 - 1)=0

(x^2 -6)(x^2 - 1) + x(x^2 - 1)=0

(x^2 +x - 6)(x^2 - 1)=0

(x + 3)(x - 2)(x^2 - 1)=0

x = -3, x = 2, x= +/-1
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Old Mar 30, 2009 | 01:36 PM
  #17  
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Looks like I came just a tad too late h:
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Old Mar 30, 2009 | 02:05 PM
  #18  
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Originally Posted by Red X
Looks like I came just a tad too late h:
Dont worry, I got one for ya.

When you have four equations whats the best way to solve for the constants c?

c1 + c2 + c3 + c4 = 1

c1 - c2 + 2c3 - 3c4 = 0

c1 + c2 + 4c3 + 9c4 = -2

c1 - c2 + 8c3 - 27c4 = -1

I cant seem to get a single equation with only one variable.

Thanks in advance.
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Old Mar 30, 2009 | 02:16 PM
  #19  
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Im stumped lol
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Old Mar 30, 2009 | 02:17 PM
  #20  
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yeh, i have no idea how to do this shit.

Originally Posted by Line7
Dont worry, I got one for ya.

When you have four equations whats the best way to solve for the constants c?

c1 + c2 + c3 + c4 = 1

c1 - c2 + 2c3 - 3c4 = 0

c1 + c2 + 4c3 + 9c4 = -2

c1 - c2 + 8c3 - 27c4 = -1

I cant seem to get a single equation with only one variable.

Thanks in advance.
Originally Posted by JessTD
C

the answer is always C
.
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