Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2010-10-22 16:03:17
- Mister_Scary
- Member
- Registered: 2010-10-22
- Posts: 30
Help with 4th question please???
Solve the expression for x: (4 - 2) (x - 2)= 4x - 8
A. x = 0
B. x = -2
C. x = 2
D.x = 6/5
Offline
#2 2010-10-22 16:15:56
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with 4th question please???
Hi Mister_Scary;
Let us look at the first step in this problem. What can you do right away to simplify this problem?
(4 - 2) (x - 2)= 4x - 8 Take a look at the first parentheses (4 - 2) , you know that one.
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
#3 2010-10-22 17:23:01
- Mister_Scary
- Member
- Registered: 2010-10-22
- Posts: 30
Re: Help with 4th question please???
Well thanks for the answer on the first question. I'll keep posting the other five around the internet until I can get them answered.
Offline
#4 2010-10-22 20:44:32
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with 4th question please???
Well thanks for the answer on the first question. I'll keep posting the other five around the internet until I can get them answered.
That is your answer to ( 4 - 2 )!!!!
You have 4 dollars and you spend 2 dollars how many dollars do you have left?
Just do that part, show me some effort. It is more work to go around posting it on every forum you can find. If you are smart enough and industrious enough to find forums then I know you can do this.
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
#5 2010-10-22 21:25:58
- Mister_Scary
- Member
- Registered: 2010-10-22
- Posts: 30
Re: Help with 4th question please???
I came up with X = 2 on this one.
Offline
#6 2010-10-22 21:39:33
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with 4th question please???
Hi;
That looks like another guess. Remember we guess when we are stuck. We are not stuck here and can do better than a guess. Here is where we are.
(4 - 2) (x - 2)= 4x - 8
We will work on this one step at a time. See that (4 - 2) what does that equal? Are you stuck there?
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
#7 2010-10-22 21:54:36
- Mister_Scary
- Member
- Registered: 2010-10-22
- Posts: 30
Re: Help with 4th question please???
2 makes the problem to the left of the equals sign, equal zero. 2 also makes the problem to the right of the equal sign, a zero.
Offline
#8 2010-10-22 22:01:05
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Help with 4th question please???
Hi Mister_Scary;
You do understand. And you understand on higher level than you know. That is correct. I do not want to kill your guessing at solution instinct. Far from it, I will enhance it. Sometimes you will not be able to solve them in your head like that. That is why we learn to manipulate equations, that is what Algebra really is.
Please follow me. W e are here.
(4 - 2) (x - 2)= 4x - 8
If we do not know the answer I will show you how to get it in another way. Start with the 4 - 2 = ?
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
Pages: 1