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Mathematics 17 Online
OpenStudy (cloverracer):

needed precal help: see attachment

OpenStudy (cloverracer):

OpenStudy (cloverracer):

@Wholock

OpenStudy (wholock):

This one will take a little work, hang with me here.

OpenStudy (wholock):

Alrighty, so, let's start by simplifying the bottom. We are going to separate it into 2 equations. \[((x + 1)/x) * -4/1\] Figure the LCD \[((x+1)/x) * -4/x\] Add them together \[(x + 1 - 4x)/x\] Add like terms to get -3x + 1

OpenStudy (cloverracer):

okay, following..

OpenStudy (wholock):

Now for the top! \[((3(x + 1))/x) * -1/1\] Using the same rules, take the LCD: \[((3(x+1)/x) * (x/x)\] (3(x + 1) - x)/x (2x + 3)/x

OpenStudy (wholock):

This makes the equation (2x + 3)/-(3x + 1)

OpenStudy (cloverracer):

so 6x + 4?

OpenStudy (wholock):

The domain is all reall numbers except those that make the equation zero..

OpenStudy (cloverracer):

so 3rd choice?

OpenStudy (wholock):

No! don't worry about simplifying further. Just work the denominator.

OpenStudy (cloverracer):

okay im so 1/3 then now it's the first choice?

OpenStudy (wholock):

Correct!

OpenStudy (wholock):

Sorry about the wait!

OpenStudy (cloverracer):

okay, thought so! no problem, i'm so thankful that you're helping! one more :'D

OpenStudy (wholock):

Sure thing!

OpenStudy (cloverracer):

i will just attach it here

OpenStudy (cloverracer):

OpenStudy (wholock):

Kay, begin by finding an LCD. \[(1/2x) + (3/1)\] \[(1/2x) + ((3 * 2x)/2x)\] \[(1 + 6x)/2x\] The LCD now will work for the numerator as well, so now you simply multiply the numerator by the LCD which is 2x.

OpenStudy (wholock):

2/((1+6x)/2x) 2 * 2x = ?

OpenStudy (cloverracer):

4x

OpenStudy (cloverracer):

@Wholock

OpenStudy (wholock):

Yes! That's it!

OpenStudy (cloverracer):

so the first choice?

OpenStudy (wholock):

Ta-da!

OpenStudy (cloverracer):

thank you soso much for all your help!

OpenStudy (wholock):

No problem! Anytime.

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