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anonymous
 one year ago
More help on algebra please?
anonymous
 one year ago
More help on algebra please?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Rationalize the denominator and simplify \[\frac{ \sqrt{a+1}2 }{ \sqrt{a+1}+2 }\] Once again I know I need to multiply it by the conjugate but again I need help doing the actual math. I multiplied it by \[\frac{ \sqrt{a+1}2 }{ \sqrt{a+1}2 }\] and I got \[\frac{ 1\sqrt{a+1} }{ 1 }\] but it doesn't fit where I need to put the answer.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3sigh it's nice to know that someone is doing latex.. it sucks that my fraction latex is broken .

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3\[\frac{ \sqrt{a+1}2 }{ \sqrt{a+1}+2 } \cdot \frac{ \sqrt{a+1}2 }{ \sqrt{a+1}2 } \]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3yeah that's used to type Math. It's called Latex. But on my end it's coo coo

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3\[\frac{ \sqrt{a+1}2 }{ \sqrt{a+1}+2 } \cdot \frac{ \sqrt{a+1}2 }{ \sqrt{a+1}2 } \rightarrow \frac{(\sqrt{a+1}2)(\sqrt{a+1}2)}{(\sqrt{a+1}+2)(\sqrt{a+1}2)}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3can we not give direct answers please? It's against code of conduct

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@LilyMQ I do need to know how

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3You can read more about the code of conduct here. http://openstudy.com/codeofconduct

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3anyway where was I? \[\frac{ \sqrt{a+1}2 }{ \sqrt{a+1}+2 } \cdot \frac{ \sqrt{a+1}2 }{ \sqrt{a+1}2 } \rightarrow \frac{(\sqrt{a+1}2)(\sqrt{a+1}2)}{(\sqrt{a+1}+2)(\sqrt{a+1}2)}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3so we need to use the foil method... as usual the denominator is always easier because the middle terms are cut out

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3\[\frac{(\sqrt{a+1}2)(\sqrt{a+1}2)}{(\sqrt{a+1}+2)(\sqrt{a+1}2)} =\frac{?}{(a+1)4}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3so foil is needed on the numerator .

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3our denominator should be a+14=a3

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3dear gawd latex... U SUCK! dw:1437556072647:dw

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3so now all we need to do is apply foil method to the numerator \[\frac{(\sqrt{a+1}2)(\sqrt{a+1}2)}{(\sqrt{a+1}+2)(\sqrt{a+1}2)} =\frac{?}{a3}\] so foil is first outer inner last \[\ \frac{\sqrt{a+1} \sqrt{a+1}2 \sqrt{a+1}2 \sqrt{a1}+(2)(2)}{a3}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0It actually looks fine on my side

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1Yeah same here dw:1437556324233:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok so we end up with \[a+12\sqrt{a+1}2\sqrt{a+1}+4\] but I'm not sure?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1Remember your polynomial expansion : \((ab)^2 = a^2 2ab+b^2\)

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1And take \(a= \sqrt{a+1}\) and \(b = 2\)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3well a square root times a square root will just be that result so in that case it's just a+1 then (2)(2) is 4 you can combine the middle terms

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Not sure how to combine the middle terms but I know they are both \[2\sqrt{a+1}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3\[a+12\sqrt{a+1}2\sqrt{a+1}+4 \] yes they both have negative signs ... factor out the square root a+1 and then do 22

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3yeah ...we're supposed to have 4\sqrt{a+1}

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3I would ignore the a+1 in the square root part and just compute 22

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[2ab \rightarrow 2(\sqrt{a+1})(2)\] in correctingmy error.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OK so I got the final answer and I figured out my error the first time and as usual it was just a simple math slip. The final answer is \[\frac{ 5+a4\sqrt{a+1} }{ a3 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh my gosh wow it took me a long time but I got 100% XD

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3\[a+12\sqrt{a+1}2\sqrt{a+1}+4 \rightarrow \frac{a4\sqrt{a+1}+5}{a3}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm still way behind on summer school but oh well lol

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3ouch. how much more material do you have to complete?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm three percent done and I need to be 100% by August 1 XD

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Plus I need to be 100% done on another class too by that time

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So it's gonna be crunch time XD

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3oh. time for all nighters. Drink tons of coffee!

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.3Hmm if you complete 20% of the material, you'll get it done in 5 days XD! So that makes it July 26.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Good plan I'll just get 20% done a day and I'll be done just on time XD
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