Nintendorks Island
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Anyone good at Math?

5 posters

Go down

Anyone good at Math? Empty Anyone good at Math?

Post by Vampire_of_Death October 16th 2009, 10:19 am

I have a problem on my homework, does anyone know how to do this?

How to solve (x^2-3)^2+2?
I did the math and got x^4-4 and my program is telling me the correct answer is x^4-6x^2+11. What the hell am I doing wrong?
Vampire_of_Death
Vampire_of_Death
Harlequin of Hate
Harlequin of Hate

Veteran VIP Contest Winner Challenge Participant Secret Ninja Participant Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 4 Coins 12141
Posts : 2193

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Rapsheba555 October 16th 2009, 4:05 pm

That IS a caret? Like x^2=x*x, right? Like squared.

You should be powering x to (2-3), then powering THAT to (2+2), if I'm correct.
Rapsheba555
Rapsheba555
Weegee
Weegee

All operators are busy, please insert more money.

Veteran VIP Contest Honorable Mention Contest Winner Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 2 Coins 33823
Posts : 3222

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by aninyosaloh October 17th 2009, 6:47 am

It has a squared binomial: (x^2-3)^2=x^4-6x^2+9 so the result is that, plus 2, which is certainly: x^4-6x^2+11

You know.. because of the (a+b)^2=a^2+2ab+b^2 thing =)
aninyosaloh
aninyosaloh
The Shadow In The Night
The Shadow In The Night

Oh, it was gorgeousness and gorgeousity made flesh

Veteran VIP Contest Honorable Mention Contest Winner Challenge Participant Secret Ninja Participant Anyone good at Math? 2laeolx
Live Chat Member Created a Tutorial Submitted a Sims Upload Anyone good at Math? 2laeolx
Trophies Won 2 Coins 10153
Posts : 482

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Rapsheba555 October 17th 2009, 7:43 pm

that's what I thought, but i wasn't totally sure.
Rapsheba555
Rapsheba555
Weegee
Weegee

All operators are busy, please insert more money.

Veteran VIP Contest Honorable Mention Contest Winner Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 2 Coins 33823
Posts : 3222

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by ZombieData October 17th 2009, 7:52 pm

o3o *is in algebra 1*


WtF?
ZombieData
ZombieData
Emo Dude
Emo Dude

No, I am NOT going to go out with you.

Veteran VIP Contest Winner Anyone good at Math? 2laeolx
Submitted a Sims Upload Anyone good at Math? 2laeolx
Trophies Won 1 Coins 6151
Posts : 649

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Rapsheba555 October 17th 2009, 7:54 pm

You'll get to it.
Rapsheba555
Rapsheba555
Weegee
Weegee

All operators are busy, please insert more money.

Veteran VIP Contest Honorable Mention Contest Winner Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 2 Coins 33823
Posts : 3222

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Ghost October 18th 2009, 6:15 am

I always used to just give up and stick some real numbers in where the "literature" was. Lol
Ghost
Ghost
Local Figment of the Imagination
Local Figment of the Imagination

Veteran VIP Contest Winner Challenge Participant Anyone good at Math? 2laeolx
Created a Tutorial Anyone good at Math? 2laeolx
Trophies Won 1 Coins 5675
Posts : 1104

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Rapsheba555 October 18th 2009, 1:26 pm

lol, "literature"
Rapsheba555
Rapsheba555
Weegee
Weegee

All operators are busy, please insert more money.

Veteran VIP Contest Honorable Mention Contest Winner Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 2 Coins 33823
Posts : 3222

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Vampire_of_Death October 20th 2009, 9:02 pm

Thanks guys, I figured I had to do the FOIL things, so thanks!
Vampire_of_Death
Vampire_of_Death
Harlequin of Hate
Harlequin of Hate

Veteran VIP Contest Winner Challenge Participant Secret Ninja Participant Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 4 Coins 12141
Posts : 2193

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Rapsheba555 October 20th 2009, 9:04 pm

Ah foil. First outer inner last.
Rapsheba555
Rapsheba555
Weegee
Weegee

All operators are busy, please insert more money.

Veteran VIP Contest Honorable Mention Contest Winner Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 2 Coins 33823
Posts : 3222

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Vampire_of_Death October 20th 2009, 9:15 pm

I know, all it said was solve, simple instructions lead to fail. I just tried everything that I could until I got it. In case anyone is interested, this is how its done.


(x^2-3)^2 = x^4 - 6x^2 + 9

x^4 - 6x^2 + 9 + 2 = x^4 - 6x^2 + 11


(x^2-3)^2. "^2" means to square what's in the parenthesis. To square means to multiply twice So "(x^2-3)^2" equals (x^2-3)(x^2-3) which means you have to FOIL that.

(x^2-3)(x^2-3) = x^4 - 6x^2 + 9

now all you have to do is add the 2 to the 9;

x^4 - 6x^2 + 9 + 2 = x^4 - 6x^2 + 11

x^4 - 6x^2 + 11 is the answer
Vampire_of_Death
Vampire_of_Death
Harlequin of Hate
Harlequin of Hate

Veteran VIP Contest Winner Challenge Participant Secret Ninja Participant Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 4 Coins 12141
Posts : 2193

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Rapsheba555 October 20th 2009, 10:22 pm

yep. Exactly what I thought. It's like the caret in the TI-83s. I was just too lazy to actually write it all out and see how it actually panned out. :P
Rapsheba555
Rapsheba555
Weegee
Weegee

All operators are busy, please insert more money.

Veteran VIP Contest Honorable Mention Contest Winner Anyone good at Math? 2laeolx
Live Chat Member Anyone good at Math? 2laeolx
Trophies Won 2 Coins 33823
Posts : 3222

Back to top Go down

Anyone good at Math? Empty Re: Anyone good at Math?

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum