anonymous
  • anonymous
-(2x-6) expand brackets
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
-1(2x-6)
anonymous
  • anonymous
Using Distributive property you can do it.. Multiplication by minus sign here means multiplication by -1./.. so according to distributive property a*(x+y)=a*x+a*y also -1*-1 = 1 -1 * 1 = -1 1*1 = 1 ie -ve multiplied by -ve = +ve +ve multiplied by -ve = -ve -ve multiplied by +ve = -ve +ve multiplied by +ve = +ve hope now you can do it now by yourself
anonymous
  • anonymous
Here * means Multiplication

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anonymous
  • anonymous
that is a*b = c means a is multiplied by b and the answer is c
anonymous
  • anonymous
on multiplying -ve with -ve, u get +ve. -ve*+ve gives _ve.
anonymous
  • anonymous
@Raeee_009 are you following?
anonymous
  • anonymous
dont understand any of that
anonymous
  • anonymous
ok..Let us start from the beginning... expand bracket means multiplying the terms outside the bracket with the terms inside.. that is for example 1.expand bracket a*(x+y) means multiply 'a' with the terms inside the bracket You understand that??
anonymous
  • anonymous
yeah
anonymous
  • anonymous
well good.. so what are the terms inside the bracket in a*(x+y) ?
anonymous
  • anonymous
6-2X
anonymous
  • anonymous
axy?
anonymous
  • anonymous
@Raeee_009 is it .. axy?? Here if we want to find the term inside bracket of blow question s*(t) inside the bracket term means the term inside the symbols ( ) here the term is side the symbol is 't' the term outside the bracket means the term outside the symbol ( ) here the term outside that symbol is s... understood?
anonymous
  • anonymous
so if that is the case can you tell me so what is the term inside the bracket in a*(y) ?
hartnn
  • hartnn
let me try with a diagram : |dw:1354020400786:dw|
anonymous
  • anonymous
@Raeee_009 You get what I am trying to say?
anonymous
  • anonymous
kind of /: but not fully can you do an example with actual numbers
anonymous
  • anonymous
ok... 2*(5+3) this means we have to multiply the term outside the bracket (here 2) with terms inside the bracket (5+3) what this means is that we have to multiply 5 by 2 and 3 by 2 and have to add the result that is 2*(5+3) = 2*5 +2*3 = 10 + 6 = 16 you got this
anonymous
  • anonymous
By looking the diagram that @hartnn posted may facilitate your learning
anonymous
  • anonymous
@Raeee_009 understood?
anonymous
  • anonymous
yeah i understand that
anonymous
  • anonymous
well.. good can you solve this then? expand bracket 2*(2+6)
anonymous
  • anonymous
2*2=4 and 2*6=12 so 4+12
hartnn
  • hartnn
thats correct :)

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