A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Can someone just help me solve this please?? i need an extraneous solution and it solved. i chose this but im not sure its correct.
2√x+5+7=4
anonymous
 one year ago
Can someone just help me solve this please?? i need an extraneous solution and it solved. i chose this but im not sure its correct. 2√x+5+7=4

This Question is Closed

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Is that the original equation?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no it said to choose your own using a√x+b+c=d

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Ah I understand hold for a minute please

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1I dont think it has an extraneous solution because I got x=16

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well could you help me find one with one please? using the a√x+b+c=d formula thingy

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1So you do understand what an extraneous solution is correct?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i think it is how it solves the problem but if you plug it back in it doesnt work out

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0like if you solve the radical but if you plug it in to check the answer will not work out

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Yes that is correct! :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im not sure how to like create and solve a radical like that though... ;(

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Create two radical equations: one that has an extraneous solution, and one that does not have an extraneous solution. Use the equation below as a model. a√x+b+c=d Use a constant in place of each variable a, b, c, and d. You can use positive and negative constants in your equation.

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1is it \[a \sqrt{x+b+c}=d\] or \[a \sqrt{x} + b + c=d\]

phi
 one year ago
Best ResponseYou've already chosen the best response.0try something like \[ \sqrt{x+2} + 1 = 1 \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the first one @stefrheart

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@phi the only problem is is that i don't know how to solve that equation to check if it has an extraneous solution

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1To solve that all you need to do is subtract the one on both sides to create \[\sqrt{x+2}=2\] and then square both sides \[(\sqrt{x+2})^{2}=(2)^{}\] and then solve

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1just for phi's equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i dont even know. i never learned radicals

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1oh you dont know what a radical is or how to work with it?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0we had a large learning gap because they changed curriculums

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Ah okay so you should learn what a radical is first then, before proceeding with the problem

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1It would make alot more sense before solving this. Do you know what a \[x ^{2}\] is? It would be easier to teach you if you knew what it is

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1yes you know what to do with it if someone gave you the equation \[4^{2}\] ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.016, i know like how to do that i just dont understand how to use like larger equations like a√x+b+c=d

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Ah okay so you know how to do that. Well the larger equations are just the same ting as a regular square root.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, so how do i find one with an extraneous solution

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0because i have one for without but i just need one with one

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1I think I may have one hold on

dinamix
 one year ago
Best ResponseYou've already chosen the best response.0x=8 u have check in the equation ans see it

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Whats the extraneous solution then? @dinamix

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0like how do you plug it in to check if it has one @dinamix

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Try this for help https://www.khanacademy.org/math/algebra2/radicalequationsandfunctions/radicalequations/e/extraneoussolutionstoradicalequations

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i already tried but it was in a different format than what the question asked

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and i got more confused..

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Hmmm im trying to figure out equations because in order for it to have both an actual and extraneous there needs to be 2 solutions which is a \[x ^{2}+bx+c\] unless we can do that you cant get both an actual and extraneous

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no it needs to just be a extraneous solution.. you write two problems and one should be regular and one should have an extraneous solution

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Ohhh then I already have one then

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1\[5\sqrt{3x5}=25\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but doesnt it have to be x+b+c=d

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1if you wwant it you can just put 3x+5+0 for under the radical

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, one sec im checking a problem i just did.

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1I will be back in a few minutes

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i think i found one, the problem i chose originally

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Message me if need you still need help

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how do i give u a medal?

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1@kenzi041 click the best response

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@stefrheart i failed, but thanks anyway

stefrheart
 one year ago
Best ResponseYou've already chosen the best response.1Aw im sorry :( @kenzi041
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.