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Jamierox4ev3r
 one year ago
Even more math review!
8b. Solve the equation. (Find only the real solutions)
Jamierox4ev3r
 one year ago
Even more math review! 8b. Solve the equation. (Find only the real solutions)

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Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2Posting equation in a few seconds...

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2\(\huge\frac{2x}{x+1} = \huge\frac{2x1}{x}\)

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1any idea how to start ?

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2hmm... let's see. I assume you would multiply both sides by the conjugate?

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2@dinamix no direct answers please. Thank you

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1hmm `cross multiply` \[\huge\rm \frac{ a }{ b}=\frac{ c }{ d } \]\[\huge\rm ad =bc\]

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1what happens when you do that, Jamie? There are maybe different way to approach, but let us see what will happen

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1but if we made it our goal so that we do not have to deal with denominators since they do not look the same, then cross multiplication would be an easier route

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2oh right. Cross multiplying is a thing. And I tried multiplying by a conjugate, but that actually seems to get kind of messy.

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2yep the denominators are definitely not the same

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1when you see `equal` sign between two fractions then u should `cross multiply`

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2If you cross multiply, it seems as if you get \(2x^{2} = 2x^{2}+x1\) And thank you @Nnesha , seems like a good rule of thumb

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1now you can equate to zero and solve for x

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1I do not understand crossmultiplication. It is not a true mathematical procedure.

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2oo in that case, wouldn't x be 1.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.1you can substitute x for 1 to check ur answer

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2a'ight then. When substituted, things look kosher (equivalent) so looks like I'm fine. But question. @nincompoop how do you know that you can squat \(2x^{2}\) to zero?

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1the equation will be set to zero by moving all of your expressions on one side and zero on the other side

dinamix
 one year ago
Best ResponseYou've already chosen the best response.1x= 1 its easy why thiss???

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2@dinamix I know it seems simple to just give an answer. Sadly, this does not help the user learn. So I prefer a process to be explained so I will have a strong understanding of how to do problems that are similar in the future and @nincompoop thank you ;;

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1cross multiplication is not a true mathematical procedure tho, but it helps

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2it sure does. thanks, both of you

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1in crossmultiplication, we skip fundamental algebraic steps because they are supposedly understood for someone who is been doing it over and over. I can show you ALL the steps which lead to the idea of "crossmultiplication"

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2If you have the time to explain, feel free. I never did understand the true mathematical processes behind cross multiplication. In my freshman algebra days, we were simply told to do it because it would give us right answers.

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1it is a good way to do the review since you are about to do calculus soon, which require rigorous algebraic acrobat knowledge.

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2indeed. and I am quite aware. I've decided to focus on algebra the most for my review, since trig, conics, and other precalculus things are still fresh in my mind.

dinamix
 one year ago
Best ResponseYou've already chosen the best response.1@Jamierox4ev3rok , @nincompoop forgive me i f i was rude

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1dw:1440545559692:dw

Jamierox4ev3r
 one year ago
Best ResponseYou've already chosen the best response.2I'll be back later, I have a class that I should probably get going to in a bit. Thank you so much in advance though @nincompoop

nincompoop
 one year ago
Best ResponseYou've already chosen the best response.1dw:1440545699554:dw