Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#701 2011-01-12 06:50:51
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
4xy?
Of Moons, Birds and Monsters
Offline
#702 2011-01-12 06:54:24
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Writing it again will not convince me it is correct. You can try it one more time and see if I will go for it.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#703 2011-01-12 06:58:04
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Grumpy old fart...
I was checking sheesh!
and... 4xy. Convinced yet?
4xy
4xy
4xy
Have you been convinced yet?
-4xy
Of Moons, Birds and Monsters
Offline
#704 2011-01-12 07:01:11
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Yes, amazing. Incredible, stupendous, marvelous but also wrong. What is the last of those two binomials?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#705 2011-01-12 07:04:04
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Of the two? Wait... um... -3y and y?
Of Moons, Birds and Monsters
Offline
#706 2011-01-12 07:04:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
That is almost correct!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#707 2011-01-12 07:06:11
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
How can something be "almost" correct? 
Of Moons, Birds and Monsters
Offline
#708 2011-01-12 07:06:57
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
When you work on something you are usually darn close.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#709 2011-01-12 07:08:28
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Really?
Well if it isn't -3y and -y then what are they?
Of Moons, Birds and Monsters
Offline
#710 2011-01-12 07:09:56
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Yes that is okay but it is slightly different from what you wrote up there.
Of the two? Wait... um... -3y and y?
Is it not?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#711 2011-01-12 07:12:04
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Wow. I need to buy a mallet to make my facepalms more powerful.
Sorry about that... however I did not make a mistake. Remember what you said? Thats was a typo. 
Of Moons, Birds and Monsters
Offline
#712 2011-01-12 07:13:50
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Okay please now the final answer minus the typo.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#713 2011-01-12 07:17:43
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Alright...
(2x - 3y)(4x - y)
*F* (2x)(4x) = 8x²
*O* (2x)(y) = 2xy
*I* (-3y)(4x) = -12yx
*L* (- 3y)(-y)
= 8x² + 2xy - 12yx + 3y²
I removed the - sign as you can see because I though a negative times a negatinve = a positive. Even though y is a variable and not a number, the rule still applies right?
Of Moons, Birds and Monsters
Offline
#714 2011-01-12 07:18:42
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Yes the rule applies, as for your answer, it is darn close!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#715 2011-01-12 07:20:47
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Oh dear, what typo did I make this time?
Of Moons, Birds and Monsters
Offline
#716 2011-01-12 07:22:47
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Look at the big O.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#717 2011-01-12 07:25:31
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Oh... O should be negative, correct? As in -2xy?
Of Moons, Birds and Monsters
Offline
#718 2011-01-12 07:27:11
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Well, that is what I have. It might be right. You might consider it. You know, at least think about it. Get in touch with the child within and consult him/her.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#719 2011-01-12 07:30:04
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
My inner child is a him? Its all staring to make sense now...
Alright smartie-pants... so we have:
8x² - 2xy - 12yx + 3y²
Do every thing look correct, or just darn close?
Of Moons, Birds and Monsters
Offline
#720 2011-01-12 07:31:26
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
That is daaaarnnn close.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#721 2011-01-12 07:33:47
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
*mallet-enhanced facepalm*
Care to point out my mista- uh I mean typo?
Of Moons, Birds and Monsters
Offline
#722 2011-01-12 07:37:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Please go to post #697 for clarification.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#723 2011-01-12 07:39:29
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
How manly bobbym...
Hi Sarah!
Bobbym,
how does (2x - 3y)(4x - y) for the next problem?
That did not clarify much.
Of Moons, Birds and Monsters
Offline
#724 2011-01-12 07:41:42
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Do you see the 2 interior terms:
-2xy and your -12yx
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#725 2011-01-12 07:42:50
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Yes. Are they wrong or are you pointing out that thy should be combined?
Of Moons, Birds and Monsters
Offline