+0  
 
0
729
6
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How it can be 2(-3) = 6?

 

Hi!

I use my calculator and it gives me =-6, but it my math book it is =6.

Could I have an explanation for this?

 Jun 16, 2014

Best Answer 

 #2
avatar+11912 
+8

why dont u ask ur maths teacher about this ! it can also be like 2*(-3) so when the bracket opens then the -3 becomes 3 thats why the answer is comin 6 in ur textbook !and zegroes is right , u should check the rest of the question , i think u just clearing the doubt of a paticular part but write the whole question then u can get much nice help !

 Jun 16, 2014
 #1
avatar+2353 
+5

I think your math book might have made a mistake. 2 * (-3) = -6

Because

positive*positive = positive

negative*positive = negative

positive*negative = negative

negative*negative = positive

 

Maybe if there's more to the question than 2*(-3) you should check the rest of the question 

 Jun 16, 2014
 #2
avatar+11912 
+8
Best Answer

why dont u ask ur maths teacher about this ! it can also be like 2*(-3) so when the bracket opens then the -3 becomes 3 thats why the answer is comin 6 in ur textbook !and zegroes is right , u should check the rest of the question , i think u just clearing the doubt of a paticular part but write the whole question then u can get much nice help !

rosala Jun 16, 2014
 #3
avatar+118677 
+5

Think about this pattern 

Notice that, on each new line, the number 2 is multiplied by goes down by 1 and the answer goes down by 2.

2*3=6

2*2=4

2*1=2

2*0=0

2*-1=-2

2*-2=-4

2*-3=-6

Can you see the pattern?

 Jun 16, 2014
 #4
avatar+11912 
0

yes melody i can see the pattern ! what u r saying is really happening in it ! but the 1st three have been arranged in descending order thats why its looking like that but if are to reach zero u probably have to use this way ! so thats a good pattern but i cant get what r u trying to tell us that answers the question through this !

 Jun 16, 2014
 #5
avatar+118677 
0

It is not just the first 3 that are in descending order Rosala it is all of them.

Here is a number line - maybe if you think about it you might understand what I am trying to say.

 

I am just showing how the pattern backs up the idea that a positive multiplied by a negative gives a negative answer.

 Jun 16, 2014
 #6
avatar+11912 
0

oh so thats what u were trying to say ! i just got a lil confused in both their connection ! hey did u see that KOOL-AID's back ! 

 Jun 16, 2014

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