Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
michelle1503
Group Title
can anyone help me to the answer for this... (will post equation in a sec...)
 2 years ago
 2 years ago
michelle1503 Group Title
can anyone help me to the answer for this... (will post equation in a sec...)
 2 years ago
 2 years ago

This Question is Closed

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
\[\sqrt{\sqrt{x2}+x}=2\]
 2 years ago

him1618 Group TitleBest ResponseYou've already chosen the best response.0
Square both sides
 2 years ago

him1618 Group TitleBest ResponseYou've already chosen the best response.0
root(x2) + x =4 root(x2) = 4x square again
 2 years ago

niravshah08 Group TitleBest ResponseYou've already chosen the best response.0
x2 = 16  8x + x^2 9x = 18 + x^2 x^2  9x + 18 = 0
 2 years ago

niravshah08 Group TitleBest ResponseYou've already chosen the best response.0
(x6)(x3)=0 x=6 or x=3
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
@niravshah08 how on earth did you get the first line x2 = 16  8x + x^2 ???
 2 years ago

niravshah08 Group TitleBest ResponseYou've already chosen the best response.0
dw:1341261837727:dw
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
okay i understand.... but is it wrong if i do this.....
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
dw:1341262013434:dw
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
and if it is wrong please explain why
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
but there cant be two different ways of doing it... i think yours is right... hmm
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.1
Michelle, your method is wrong, because: \[(a + b)^2 \neq a^2 + b^2\]
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.1
So, when squaring an equation, you literally put the whole LHS and RHS in huge brackets and square the whole bracket
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
so what your saying is that i can do this:
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.1
Also, at the end, always check your answers, because (usually when there's a square root) sometimes they yield a negative number under the square root, so the answer is not real
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
dw:1341262893119:dw
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
yeah when i did it my method i got a random answer but did notice the  :) just my method is wrong LOL
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.1
Yeah that's correct. Although, it would be easier to, before you square it, take the x over to the other side. It just makes it easier to solve.
 2 years ago

michelle1503 Group TitleBest ResponseYou've already chosen the best response.0
ah yeah i see i just tried it and it is possible but just involves alot of roots... and i dont like roots... they scare me... D': thanks for the explanation :D lifesaver :)
 2 years ago

slaaibak Group TitleBest ResponseYou've already chosen the best response.1
haha yeah, it gets a bit messy.. it's a pleasure :)
 2 years ago
See more questions >>>
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.