A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
Solve. Check for extraneous solutions.
sqrt(x+srt2x)=sqrt2x.
Please show step by step instruction. Thankyou.
anonymous
 3 years ago
Solve. Check for extraneous solutions. sqrt(x+srt2x)=sqrt2x. Please show step by step instruction. Thankyou.

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0$$\sqrt{x+\sqrt{2x}}=\sqrt{2x}$$is that correct?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0okay, first thing we want to do is square both sides to get rid of the first radicals:$$\sqrt{x+\sqrt{2x}}=\sqrt{2x}\\\left(\sqrt{x+\sqrt{2x}}\right)^2=\left(\sqrt{2x}\right)^2\\x+\sqrt{2x}=2x\\\sqrt{2x}=2xx\\\sqrt{2x}=x$$now we square again:$$\left(\sqrt{2x}\right)^2=x^2\\2x=x^2\\x^22x=0\\x(x2)=0$$

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0to verify these solutions are not extraneous, plug them back in.
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.