Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#826 2011-01-14 12:32:00
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Ooooh, so is ( a + b ) ( a + b ) - c² right?
Of Moons, Birds and Monsters
Offline
#827 2011-01-14 12:33:55
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
That is correct. Do you see why a^2 + b^2 - c^2 is not correct? And can you now complete the problem? Please post your work.
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
#828 2011-01-14 12:36:55
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Yes, I see that. Complete? I though we were finished! 
What should I do next?
Of Moons, Birds and Monsters
Offline
#829 2011-01-14 12:41:29
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
( a + b ) ( a + b ) - c^2
You should do the indicated multiplication ( the ( a + b )'s need multiplying) .
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
#830 2011-01-14 12:44:50
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Okay... so how would I write that?
Like (a + b)^2?
I have to go lay down soon btw, my head is killing me)
Of Moons, Birds and Monsters
Offline
#831 2011-01-14 12:49:58
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
You would have to expand that into
That is the answer. Go and lie down, get some rest, you did well.
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
#832 2011-01-14 12:53:17
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Wow, that was confusing as hell!
But thank you very much and have a goodnight, see you later! 
Of Moons, Birds and Monsters
Offline
#833 2011-01-14 12:55:16
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Good night and it will clear up next time we do 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
#834 2011-01-15 07:43:54
- Sarah Rebekah 14
- Guest
Re: Equations with parenthesis?
Hi bobbym and misheeru.
#835 2011-01-15 09:59:57
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
Misheeru is resting right now. I am the only one here.
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
#836 2011-01-17 07:03:44
- Sarah Rebekah 14
- Guest
Re: Equations with parenthesis?
Hi bobbym thats nice.
#837 2011-01-17 10:16:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hello! What are you doing today?
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
#838 2011-01-17 14:09:02
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Hey guys. ^^
And maybe bobbym, but now they want me to work with "Perfect Square Trinomials".
Which, for the most part, I felt like I understood. Like this:
(w + x)(w + x)
= w² + 2xw + x²
But, then I got to this: (4x³ + 7y³z^4)² and now I'm completely lost!
Of Moons, Birds and Monsters
Offline
#839 2011-01-17 14:12:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi;
You do it in the same way. Ima!
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
#840 2011-01-18 07:16:45
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Alright...um... if I do it the same as the other one then I get
(4x² + 7yz^4)²
= 16x² + 56x²y³z^4 + 49y³z^4?
Of Moons, Birds and Monsters
Offline
#841 2011-01-18 07:19:52
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Nope! Try again please.
Oh wait, 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
#842 2011-01-18 07:27:36
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Mmkay... let me try and break this down...
And what the hell! I just realized I copied part of it down wrong! The exponent by 4x should be 3, not 2. Lets try this again...
(4x³ + 7y³z^4)²
(4x³ )² = 16x^6
2(4x³)(7y³z^4) = 56x³y³z^4
(7y³z^4)² = 49y^6 z^8
= 16x^6 + 56x³y³z^4 + 49y^6 z^8?
How does that look? Am I at least darn close?
Of Moons, Birds and Monsters
Offline
#843 2011-01-18 07:29:52
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
That is correct! Wunderbar! I am exploding with joy. Yub dub!
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
#844 2011-01-18 07:34:30
- Sarah Rebekah 14
- Guest
Re: Equations with parenthesis?
Hi bobbym Misheeru Just Chiling.
#845 2011-01-18 07:36:27
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Hi Sarah;
It is 64F here and I am still freezing.
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
#846 2011-01-18 07:38:54
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Woah! I got it right? Really? I'm super happy! Thank you bobbym!
But what does "yub dub" mean?
Of Moons, Birds and Monsters
Offline
#847 2011-01-18 07:40:16
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
Did you see Sarah's message to you? Yub dub might be a little strong for you.
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
#848 2011-01-18 07:44:33
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
I did not.
Hi, Sarah! Chillin'? Sounds cool. ^^
Well what is it bobbym?
Of Moons, Birds and Monsters
Offline
#849 2011-01-18 07:46:10
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Equations with parenthesis?
I think you need more problems. Let us forget yub dub for right now.
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
#850 2011-01-18 07:48:03
- misheeru
- Member
- Registered: 2010-02-18
- Posts: 4,594
Re: Equations with parenthesis?
Um... okay.
How does (2x - 1/2)^2 sound for the next one? It has a yucky fraction in it....
Of Moons, Birds and Monsters
Offline