A community for students.
Here's the question you clicked on:
 0 viewing
mahmit2012
 3 years ago
if x+sqrt(x)=1 what is the value of x^2+2x.sqrt(x)
mahmit2012
 3 years ago
if x+sqrt(x)=1 what is the value of x^2+2x.sqrt(x)

This Question is Closed

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1\[x+\sqrt{x}=1\] \[\sqrt{x}=1x\]x^23x+1=0 \[x=12x+x^2\] \[x^23x+1=0\] \[x=\frac{3\sqrt{5}}{2}\] and \[1=(x+\sqrt{x})^2=x^2+2x\sqrt{x}+x\]so \[x^2+2\sqrt{x}=1\frac{3\sqrt{5}}{2}=\frac{23+\sqrt{5}}{2}=\frac{1+\sqrt{5}}{2}\]

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1where did you get x^23x+1=0 from? Oo

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1\[\sqrt{x}=1x\] square both sides get \[x=(1x)^2=12x+x^2\] set equal to zero to solve the quadratic get \[x^23x+1=0\] unless i goofed up

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1no, you're right, i just didn't pay attention :P

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1you really in brazil?!

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1so if i sometimes say something wrong in my questions, it's becaus i have to translate them all :)

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1yup. all of them :)

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1why not? i can barely speak one language, and portuguese is way different than english

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1yeah but i lived in england for a few years when i was little, so i still remember a few things. The hard part is to know scientific words, but MIT open course helps me with that lol

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1i bet brazil in nicer than england

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1no way, i'm doing everything to go back. where are you from?

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1going back when you graduate? or sooner?

nickymarden
 3 years ago
Best ResponseYou've already chosen the best response.1sooner, my dad works in reasearch and he knows a lot of people at some universities in england so i might try to get a transfer or something when he goes there to do his Postdoc

satellite73
 3 years ago
Best ResponseYou've already chosen the best response.1good luck! hope you get there soon.
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.