A community for students.
Here's the question you clicked on:
 0 viewing
ExplainItLikeImFive
 one year ago
Solve the equation. Identify any extraneous solutions.
ExplainItLikeImFive
 one year ago
Solve the equation. Identify any extraneous solutions.

This Question is Closed

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0A. 6 is a solution to the original equation. The value –5 is an extraneous solution. B. 6 and 5 are both extraneous solutions. C. 5 is a solution to the original equation. The value –6 is an extraneous solution. D. 6 and –5 are solutions.

dan815
 one year ago
Best ResponseYou've already chosen the best response.0do u know the meaning of extraneous

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0That it's unrelated, I think.

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1square both sides x^2 = x+ 30 x^2 x  30 = 0 can u solve this?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1extraneous means that although the working out gives it as a solution , it is not possible as a root

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1not quite (x  6)(x + 5) = 0 giving x = 6 , 5

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0So what do I do with that?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1well see if these roots are possible by substituting each into the original equation

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1eg x = 6 6 = sqrt(6 + 30) 6 = 6  so that is a genuine root

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0So I can eliminate B and C

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0I dont think so.

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1try plugging in 5 for x in the original equation

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1 5 = sqrt (5 + 30) does that work out?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1what are the square roots of 25?

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0So they're both genuine making them both solutions.

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0I do believe I'd pick D

ExplainItLikeImFive
 one year ago
Best ResponseYou've already chosen the best response.0Thank you very much.

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.1please explain why thats wrong

Laaislima
 one year ago
Best ResponseYou've already chosen the best response.0ask the teacher, I answered D and I got it wrong.

dan815
 one year ago
Best ResponseYou've already chosen the best response.0oh sorry this is your question dw:1377219778699:dw

dan815
 one year ago
Best ResponseYou've already chosen the best response.0your answers are 6 and 5!

Laaislima
 one year ago
Best ResponseYou've already chosen the best response.0The right answer should be 6 is a solution to the original equation. The value –5 is an extraneous solution.
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.