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gosh...any ideas about how to go about doing this problem???
Replies: 25Last Post Sep. 23 9:39pm by Siress

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( 2kewl4u2know )


Enlightened One

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Quote: from Permious at 9:27 pm on Sep. 23, 2008

Quote: from MixedDelight at 7:27 pm on Sep. 23, 2008

Math=heartache.

 
math is fucking awesome


Looks like we were all wrong...the answer was:

(s-1+8f)^2 (s-1-8f)^2

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7:30 pm on Sep. 23, 2008 | Joined Feb. 2008 | 220 Days Active
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Permious

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Quote: from 2kewl4u2know at 7:30 pm on Sep. 23, 2008

Quote: from Permious at 9:27 pm on Sep. 23, 2008

Quote: from MixedDelight at 7:27 pm on Sep. 23, 2008

Math=heartache.
 

 
 math is fucking awesome


Looks like we were all wrong...the answer was:

(s-1+8f)^2 (s-1-8f)^2


wtf

that answer is fucking wrong

it should be

(s - 1 + 8f)(s - 1 - 8f)

fucking trust me

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jesus christ was a cunt and a rapist


7:31 pm on Sep. 23, 2008 | Joined July 2008 | 80 Days Active
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Permious

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if you multiply out what i just wrote you WILL get s^2 - 2s + 1 - 64f^2


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jesus christ was a cunt and a rapist

7:31 pm on Sep. 23, 2008 | Joined July 2008 | 80 Days Active
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( 2kewl4u2know )


Enlightened One

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Quote: from Permious at 9:31 pm on Sep. 23, 2008

Quote: from 2kewl4u2know at 7:30 pm on Sep. 23, 2008

Quote: from Permious at 9:27 pm on Sep. 23, 2008

Quote: from MixedDelight at 7:27 pm on Sep. 23, 2008

Math=heartache.
   

   
math is fucking awesome


Looks like we were all wrong...the answer was:

(s-1+8f)^2 (s-1-8f)^2


 

wtf  

that answer is fucking wrong  

it should be  

(s - 1 + 8f)(s - 1 - 8f)  

fucking trust me


The math program my boyfriend (who I'm helping with these) is using fucking sucks...

Post edited at 7:33 pm on Sep. 23, 2008 by 2kewl4u2know

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"Energizer Bunny arrested, charged with battery."


7:32 pm on Sep. 23, 2008 | Joined Feb. 2008 | 220 Days Active
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Permious

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(s - 1 - 8f)(s - 1 + 8f)

= s(s - 1 + 8f) - 1(s - 1 + 8f) - 8f(s - 1 + 8f)

= s^2 - s + 8fs - s + 1 - 8f - 8fs - 8f - 64f^2

= s^2 - 2s + 1 - 64f^2

yep i was totally right

-------
jesus christ was a cunt and a rapist


7:34 pm on Sep. 23, 2008 | Joined July 2008 | 80 Days Active
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Enlightened One

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Quote: from Permious at 9:34 pm on Sep. 23, 2008

(s - 1 - 8f)(s - 1 + 8f)

= s(s - 1 + 8f) - 1(s - 1 + 8f) - 8f(s - 1 + 8f)

= s^2 - s + 8fs - s + 1 - 8f - 8fs - 8f - 64f^2

= s^2 - 2s + 1 - 64f^2

yep i was totally right


Hold on...I think my boyfriend is just typing it all in wrong...starting to piss me off.  Another problem asked for w^3 - 125 factored, and I gave him (w-5)^2(w+5) and it said it was wrong...because it didn't want that simplified of an answer.

FUCKING starting to piss me off.

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"Energizer Bunny arrested, charged with battery."


7:36 pm on Sep. 23, 2008 | Joined Feb. 2008 | 220 Days Active
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classicalandrew


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i agree with permious...lol

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7:36 pm on Sep. 23, 2008 | Joined Sep. 2008 | 49 Days Active
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Permious

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the rule is x^3 - y^3 = (x - y)(x^2 + xy + y^2)

so w^3 - 125 = w^3 - 5^3 = (w - 5)(w^2 + 5w + 25) which can't be factorised any further



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jesus christ was a cunt and a rapist


7:39 pm on Sep. 23, 2008 | Joined July 2008 | 80 Days Active
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( 2kewl4u2know )


Enlightened One

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Quote: from Permious at 9:39 pm on Sep. 23, 2008

the rule is x^3 - y^3 = (x - y)(x^2 + xy + y^2)

so w^3 - 125 = w^3 - 5^3 = (w - 5)(w^2 + 5w + 25) which can't be factorised any further


Yeah..I see that now...tonight is just a horrible night for math for me    

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"Energizer Bunny arrested, charged with battery."


7:42 pm on Sep. 23, 2008 | Joined Feb. 2008 | 220 Days Active
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carmen2487


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a^2-b^2=a+b(a-b)
=]

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carmennnn =)

7:48 pm on Sep. 23, 2008 | Joined Sep. 2008 | 21 Days Active
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Siress


Quality Control Engineer
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No, Carmen. No. (a+b)(a-b)!=a+b(a-b)!=a^2-b^2
!= means not equal.

Permious has been correct on everything I've read.

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9:39 pm on Sep. 23, 2008 | Joined Sep. 2007 | 28 Days Active
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