3x(y+2)-y(x+4)
Alright thank you for posting it. Now, what does the question ask you to do with that equation?
simplify it
Alright well first you'll want to open up the brackets. What do you get?
y2 and x4?
I am so confused!!!!
mmss, when you open up a bracket, you will have to multiply everything in the bracket with the thing immediately outside the bracket. For example, the first expression you have 3x(y+2). Open up the brackets, so you multiply y AND +2 with 3x. So you get 3xy+6x. Do you understand how that works? Now try it with the second brackets you have.
so it will be 3xy+12?
Not really. See for the second part you have -y(x+4) Open up the brackets and try to follow what I said. What do you get?
i got 1 I multiplied 3x times -y and added 4
what do I do with the -y?
Do I multiply 3 and -y or x? What about the 4??? :(
Here, let me try demonstrating it to you: |dw:1379993425271:dw| Does that make sense?
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