Question

http://www.sketchtoy.com/36457176

@amistre64

Answer 1

Remove the first set of parentheses since it's unnecesary.
To remove the second set of parentheses, distribute the negative sign (-1) by changing every sign of the terms inside the second set of parentheses.
Then combine like terms.
Like terms are terms wirth the same varibale parts.
Here's a similar but simpler example:
(x^2 + x) - (-3x^2 + 4x) =
x^2 + x + 3x^2 - 4x =
x^2 + 3x^2 + x - 4x =
4x^2 - 3x

Answer 2

That first part kind of confused me..

Answer 3

@ganeshie8 @Luigi0210

Answer 4

group like terms

Answer 5

How would I subtract them then? .-.

Answer 6

Just make sure you distribute the negative to everything

Answer 7

http://www.sketchtoy.com/36611903

Answer 8

http://www.sketchtoy.com/36613302 ?

Answer 9

why do you only have 3 terms?

Answer 10

I don't know...

Answer 11

^_^'
Here let's try something different. Just ignore the x's for a sec and add whatever is in the parenthesis but DON'T combine them
http://www.sketchtoy.com/36614748

Answer 12

Okay. Can I erase the last thing I did?

Answer 13

Sure

Answer 14

http://www.sketchtoy.com/36616368

Answer 15

@Luigi0210

Answer 16

close :)
http://www.sketchtoy.com/36617215

Answer 17

How do I not subtract those 2?

Answer 18

because they are not like terms, remember that it's -3x and -3

Answer 19

sorry.. I think I'm just confusing you more D: