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Mathematics 19 Online
OpenStudy (anonymous):

(4x-4)-x

OpenStudy (alexandervonhumboldt2):

(4x-4)-x=4x-4-x

HanAkoSolo (jamierox4ev3r):

this is an expression...what do you want to do with it @mari_2495

OpenStudy (alexandervonhumboldt2):

simplify

OpenStudy (anonymous):

btw thank you @AlexandervonHumboldt2

OpenStudy (alexandervonhumboldt2):

np

OpenStudy (anonymous):

"simplify" in this context means "combine like terms"

HanAkoSolo (jamierox4ev3r):

don't forget to add like terms...remember that there are two x values in this expression

HanAkoSolo (jamierox4ev3r):

and darn @satellite73 beat me to it :P

HanAkoSolo (jamierox4ev3r):

so 4x and -x can be combined :)

OpenStudy (anonymous):

okay then what else il need help

OpenStudy (anonymous):

@Jamierox4ev3r

OpenStudy (alexandervonhumboldt2):

you just get 3x-4 as 4x-x=3x and 4 leaves

OpenStudy (anonymous):

okay I got 3x but now what

OpenStudy (alexandervonhumboldt2):

3x is not full write -4 after 3x

HanAkoSolo (jamierox4ev3r):

so 4x and -x Think about multiplying the two. Also think about this rule: x+x=2x but x(x)=x^2

OpenStudy (anonymous):

-1 @AlexandervonHumboldt2

HanAkoSolo (jamierox4ev3r):

Here, let me draw you a diagram|dw:1425273200858:dw|

OpenStudy (anonymous):

0

OpenStudy (anonymous):

@Jamierox4ev3r okay so I did but I got 0 idk

OpenStudy (anonymous):

@sleepyjess

OpenStudy (sleepyjess):

This is pretty much just subtracting :)

OpenStudy (anonymous):

oh okay but I need help

OpenStudy (sleepyjess):

(4x - 4) - x just drop the parentheses 4x - 4 - x

HanAkoSolo (jamierox4ev3r):

wait a sec....@sleepyjess are you sure that the parentheses is here to signify a multiplication by -x? O_O

OpenStudy (anonymous):

so I got x-x=1

HanAkoSolo (jamierox4ev3r):

because if you think about it... it can be rewritten as -x(4x-4)

OpenStudy (sleepyjess):

If it was multiplication, it should be written as -x(4x - 4) to begin with

OpenStudy (sleepyjess):

@Kainui

HanAkoSolo (jamierox4ev3r):

true...wow the parentheses threw me off tho >.<

OpenStudy (anonymous):

okay I got -4x+4 ugh am I right

OpenStudy (sleepyjess):

Ok, what is 4x-1x?

OpenStudy (anonymous):

3x

OpenStudy (sleepyjess):

Yes, now we can't combine 3x and 4 since they aren't like terms, so the final answer should be 3x + 4

OpenStudy (sleepyjess):

*-4

OpenStudy (sleepyjess):

3x -

OpenStudy (sleepyjess):

4

OpenStudy (anonymous):

okay so 3x-4

OpenStudy (sleepyjess):

Yes haha I can't type tonight apparently =P

Nnesha (nnesha):

\(\color{blue}{\text{Originally Posted by}}\) @sleepyjess If it was multiplication, it should be written as -x(4x - 4) to begin with \(\color{blue}{\text{End of Quote}}\) |dw:1425273987366:dw|there suppose to be + plus sign so combine like terms:-)

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