anonymous
  • anonymous
Simplify each radical expression.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
|dw:1377891673224:dw|
skullpatrol
  • skullpatrol
Any ideas?
anonymous
  • anonymous
let me try. hold on

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More answers

anonymous
  • anonymous
on numbe 6, is it like , get the square root of 75 and 3 then add it up?
skullpatrol
  • skullpatrol
Yes, but the question is asking you to simplify.
anonymous
  • anonymous
i dont really know how to do that '-' would it be sqrt 78 ?
skullpatrol
  • skullpatrol
Use a calculator and check please.
anonymous
  • anonymous
|dw:1377892346496:dw|
skullpatrol
  • skullpatrol
OpenStudy values the Learning process - not the ‘Give you an answer’ process Don’t post only answers - guide the asker to a solution.
jdoe0001
  • jdoe0001
hmm, which one are you doing?
anonymous
  • anonymous
when i typed qrt 75 + sqrt 3 on my calculator it gave me = 78
jdoe0001
  • jdoe0001
5?
anonymous
  • anonymous
THE PROBLEM IS , idk how to do that
anonymous
  • anonymous
axactly , guide me to an asnwer
anonymous
  • anonymous
all of them @jdoe0001
skullpatrol
  • skullpatrol
$$\huge \sqrt{75}+ \sqrt3 $$
skullpatrol
  • skullpatrol
Any other ideas? @Laaislima
anonymous
  • anonymous
I told you idk how to do it
skullpatrol
  • skullpatrol
Tell what you DO know about this?
jdoe0001
  • jdoe0001
ahemm... ok, notice the 1st one, \(\bf \sqrt{45n^5}\) notice the 45, can you break it down in factors? lemme do this so you can see it|dw:1377892954939:dw| \(\bf 45 = 3 \times 3 \times 5 \implies 45 = 3^2 \times 5\\ n^5 = n \times n\times n\times n\times n \implies n^2 \times n^2 \times n\\ \sqrt{45n^5} \implies \sqrt{ 3^2 \times 5 \times n^2 \times n^2 \times n }\)
anonymous
  • anonymous
@jdoe0001 that is not the final asnwer right?
jdoe0001
  • jdoe0001
so what can you take out of the radical?
jdoe0001
  • jdoe0001
no, it still needs simplifying
anonymous
  • anonymous
is it like '' add the same? like , 3^2 with the n ^2? Im sorry i havent done this in a while
skullpatrol
  • skullpatrol
Relax, and let him do all the work...
jdoe0001
  • jdoe0001
any exponential inside the radical, that matches the radical, comes out, by itself, without exponent \(\bf \Large \sqrt[n]{x^ny} \implies x \sqrt[n]{y}\) notice, the "x" comes out, since it matches the radical, the "y" does not
anonymous
  • anonymous
@skullpatrol I dont need him to do all the work , I want to understando how to do it
jdoe0001
  • jdoe0001
yeap, agree on that, you have do use some "elbow grease" hehe
anonymous
  • anonymous
how am I going to do it MYSELF if I DO NOT KNOW HOW, good God, you'd suck as a teacher.
skullpatrol
  • skullpatrol
I know it is hard work to learn something new but please try to put some effort into learning.
jdoe0001
  • jdoe0001
the concept is very simplistic really in my view, what happens is, some folks get off track not because the concept is simple, but because they ask for something 3 hops further down the road you can' t understand say polynomial rationals if haven't done polynomials so you'd need to cover polynomials first, but can't blame others for that
anonymous
  • anonymous
Forget it . Thanks
jdoe0001
  • jdoe0001
seems to me you haven't done any exponentials whatsoever, thus
jdoe0001
  • jdoe0001
:| yeah, in my view, that's what happens for skipping chapters
anonymous
  • anonymous
In my view, you are guessing a situation, don't know why I have to be on online school nor how hard it if for me to learn math without a teacher ;)
skullpatrol
  • skullpatrol
Don't they give you a textbook?
anonymous
  • anonymous
They do , but once again, math it's not easy for everybody, I've always been bad in math, even when I was in school with a teacher standing in front of me, now think without it... not so easy buddy , not so easy
skullpatrol
  • skullpatrol
http://www.youtube.com/watch?v=6QJtWfIiyZo
skullpatrol
  • skullpatrol
Try this guy he's pretty good for all topics in math :)
anonymous
  • anonymous
Thank you
skullpatrol
  • skullpatrol
Thanks for trying to learn something new in math.
anonymous
  • anonymous
Ok , so on 7 I got √7 x √14 + √7 x √3 = √7 x 14 + √7x3 √7 x 14 = 98 = √49 x 2 √49 x √2 = 7√2 7√2 + √21 can I simplify even more?
skullpatrol
  • skullpatrol
Please watch the videos first, and if you don't understand what is going on; then go to the next lower level, until you find a level where you do know what is going on, then work your way up. That is the best way to learn math.

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