I got back my first algebra test today. I got a 55-F, which I thought was the wierdes thing, so when the prof. went over the test, turns out he magically mixed in my scantron with a different test form. Anyways, it turns out I got a 90-A. Thats not what this is about this, but its leading to it. One of the questions I did get wrong was, -5 squared. I was taught since middle school and a negative squared turns into a postive. Either the stereotype about public school is right, or my teacher is nuts, because he said -5 squared is negative 25, not positive 25.
Just venting, but seriously wth, I've never seen it solved that way.
You are looking at it as -5 * -5. That does equal positive 25.
Algaebraicly it is written like this.
-(5 squared) = -25 So the negative is applied after 5 is squared.
I hate algebra. I failed it in high school. >:(
It never made sense to me either. Logically thinking/speaking, Whe you multiplyor square a negative then you are just going deeper in the hole. Think of it this way. I write 5 checks for $5 each and have a 0 balance in my account. Well, I'm now $25 in the hole.
Quote from: Da_Mtg_Man on September 17, 2008, 09:55:58 AM
It never made sense to me either. Logically thinking/speaking, Whe you multiplyor square a negative then you are just going deeper in the hole. Think of it this way. I write 5 checks for $5 each and have a 0 balance in my account. Well, I'm now $25 in the hole.
Good Lord!! What hole? Write a check to JoeDirt for his generator. b:r
Its just funny that now its explained to me. In highschool they always taught us a negative times a negative gives a positive, same with exponents. I mean, when you put -5 squared into a calculator, even that gives you a positive 25.
Quote from: klutchbuster400 on September 17, 2008, 10:32:46 AM
Its just funny that now its explained to me. In highschool they always taught us a negative times a negative gives a positive, same with exponents. I mean, when you put -5 squared into a calculator, even that gives you a positive 25.
Not sure what kind of calculator you have, but you may want to buy one that gives you the right answers. ???
-5 squared in my calculater gives me an answer of -25. ;)
put the (-5) in parentheses then square it and see waht you get
Quote from: KAW3604x4 on September 17, 2008, 10:51:50 AM
Quote from: klutchbuster400 on September 17, 2008, 10:32:46 AM
Its just funny that now its explained to me. In highschool they always taught us a negative times a negative gives a positive, same with exponents. I mean, when you put -5 squared into a calculator, even that gives you a positive 25.
Not sure what kind of calculator you have, but you may want to buy one that gives you the right answers. ???
-5 squared in my calculater gives me an answer of -25. ;)
Is that the same calculator you used to charge me for my deck? ;D No wonder your price was sooo good.
Quote from: Keeter on September 17, 2008, 11:30:37 AM
Is that the same calculator you used to charge me for my deck? ;D No wonder your price was sooo good.
That'd be the one! :o No wonder I didn't make any money on it! ??? ;D ;D ;D
And yes (-5) squared produces 25 on my calculater. ::)
Quote from: KAW3604x4 on September 17, 2008, 12:04:05 PM
Quote from: Keeter on September 17, 2008, 11:30:37 AM
Is that the same calculator you used to charge me for my deck? ;D No wonder your price was sooo good.
That'd be the one! :o No wonder I didn't make any money on it! ??? ;D ;D ;D
And yes (-5) squared produces 25 on my calculater. ::)
You would think that you would have realized something was wrong when you were paying Keeter for the pleasure of building his deck. ;D
Quote from: Da_Mtg_Man on September 17, 2008, 09:55:58 AM
It never made sense to me either. Logically thinking/speaking, Whe you multiplyor square a negative then you are just going deeper in the hole. Think of it this way. I write 5 checks for $5 each and have a 0 balance in my account. Well, I'm now $25 in the hole.
Well I know my bank charges $35 for bounced checks. So wouldn't that leave you $25 in the hole, plus $175 in bounced check fees? ;) :(
Quote from: Kaw3604x4 Princess on September 17, 2008, 01:14:59 PM
You would think that you would have realized something was wrong when you were paying Keeter for the pleasure of building his deck. ;D
Yep! You'd a thought! :(
Quote from: Kaw3604x4 Princess on September 17, 2008, 01:14:59 PM
Quote from: KAW3604x4 on September 17, 2008, 12:04:05 PM
Quote from: Keeter on September 17, 2008, 11:30:37 AM
Is that the same calculator you used to charge me for my deck? ;D No wonder your price was sooo good.
That'd be the one! :o No wonder I didn't make any money on it! ??? ;D ;D ;D
And yes (-5) squared produces 25 on my calculater. ::)
You would think that you would have realized something was wrong when you were paying Keeter for the pleasure of building his deck. ;D
I call it friendship dues. :) :) :) :) :) :) :) :) :) :) :) :) :) :)
Quote from: Keeter on September 17, 2008, 02:39:10 PM
I call it friendship dues. :) :) :) :) :) :) :) :) :) :) :) :) :) :)
That's funny, 'cause, I call it "LESSON LEARNED" !!!!! :o :P :P ;) ;D ;D
Quote from: QT314 on September 17, 2008, 01:15:08 PM
Quote from: Da_Mtg_Man on September 17, 2008, 09:55:58 AM
It never made sense to me either. Logically thinking/speaking, Whe you multiplyor square a negative then you are just going deeper in the hole. Think of it this way. I write 5 checks for $5 each and have a 0 balance in my account. Well, I'm now $25 in the hole.
Well I know my bank charges $35 for bounced checks. So wouldn't that leave you $25 in the hole, plus $175 in bounced check fees? ;) :(
lol.... Yeah, see, Even more in the hole now.
Quote from: KAW3604x4 on September 17, 2008, 02:56:17 PM
Quote from: Keeter on September 17, 2008, 02:39:10 PM
I call it friendship dues. :) :) :) :) :) :) :) :) :) :) :) :) :) :)
That's funny, 'cause, I call it "LESSON LEARNED" !!!!! :o :P :P ;) ;D ;D
I will make it up you on the next job. PROMISE ;) I have a couple of projects in mind. :bow.gif :bow.gif :bow.gif Thanks again
Quote from: Keeter on September 17, 2008, 03:50:11 PM
I will make it up you on the next job. PROMISE ;) I have a couple of projects in mind. :bow.gif :bow.gif :bow.gif Thanks again
;D ;D ;D ;D How much will that cost me? :o ;D ;D ;D ;D
I was kidding about "LESSON LEARNED"! Turned out to make a good friend! Thanks Keeter! ;)
You are just going to have to break it to your professor that he is wrong. -5 squared is positive 25. I'm in Calculus.
(-5) x (-5) = 25
-5 squared = -25
different but the same, the same but different.
Google Speaks.
http://www.google.com/search?hl=en&q=-5+squared&btnG=Google+Search&aq=f&oq= (http://www.google.com/search?hl=en&q=-5+squared&btnG=Google+Search&aq=f&oq=)
Quote from: mrbones on September 17, 2008, 05:04:52 PM
Google Speaks.
http://www.google.com/search?hl=en&q=-5+squared&btnG=Google+Search&aq=f&oq= (http://www.google.com/search?hl=en&q=-5+squared&btnG=Google+Search&aq=f&oq=)
Damn it! My calculator does work!! ;) ;) ;) Then why am I losing so much money? :(
Yep.
-(5) squared = -25
-5 squared = 25
Parentheses first ;)
-Curtis-
the same rule applies. the negative outside the parenthesis is considered a number, negative 1.
so -1(5 squared) = -1(25)=
-1 times 25 = -25
(neg) times (pos) = (neg) :lecture.gif
do it in reverse, " the square root of -25 = -5"
Quote from: NYRAPTOR on September 17, 2008, 07:21:11 PM
do it in reverse, " the square root of -25 = -5"
Its impossible to take the square root of a negative number. Unless of course you take into account the Unreal numbers and the variable
i. Think of it like this, a negative times a negative gives you a positive, and a negative times a positive gives you a negative. But trying to take the square root of -25, -5 x +5, you get two different numbers. Therefore, there is no one number that is the square root of a negative, unless you use 5
i, which is a whole other story.
Quote from: KAW3604x4 on September 17, 2008, 06:05:43 PM
Quote from: mrbones on September 17, 2008, 05:04:52 PM
Google Speaks.
http://www.google.com/search?hl=en&q=-5+squared&btnG=Google+Search&aq=f&oq= (http://www.google.com/search?hl=en&q=-5+squared&btnG=Google+Search&aq=f&oq=)
Damn it! My calculator does work!! ;) ;) ;) Then why am I losing so much money? :(
Because your a nice guy. :Fp :Fp :Fp :Fp