anonymous
  • anonymous
How would you simplify the square root of 45x^9
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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mayankdevnani
  • mayankdevnani
first, 45=9*5 square root of 9=3
mayankdevnani
  • mayankdevnani
ok
anonymous
  • anonymous
Ok, I've got that but the exponents are driving me crazy!!

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calculusfunctions
  • calculusfunctions
Please teach. Do not give out solutions and hints @TheViper
TheViper
  • TheViper
ok @calculusfunctions thanx:)
TheViper
  • TheViper
@harrisc1221 first find the factors of 45
anonymous
  • anonymous
I've got that but I am so confused on how to factor the variables and exponents.
mayankdevnani
  • mayankdevnani
|dw:1350552721744:dw|
mayankdevnani
  • mayankdevnani
am i right @calculusfunctions
calculusfunctions
  • calculusfunctions
@harrisc1221 square root and square are inverse operations. In other words, the square root and the square undo each other. For example, if the square of 9 is 81, then the square root of 81 is 9. Understand so far before I continue.
anonymous
  • anonymous
Ok
TheViper
  • TheViper
\[\large{\sqrt{45x^9}=\sqrt{5\times5\times3\times x\times x \times x\times x\times x\times x\times x\times x\times x}}\] \[\Large{=5\times x\times x\times x\times x\sqrt{3\times x}=5x^4\sqrt{3x}}\]
calculusfunctions
  • calculusfunctions
@mayankdevnani yes but you have to ask yourself if the student who is learning understands what you did and more importantly why you did what you did. This is why it's important to allow the student to arrive at the solutions themselves by guiding them, rather than simply saying here, this is how you answer this question. The student may understand this particular problem then but that doesn't help them solve future problems. A teachers job is to teach, not say, oh here let me solve it for you.
mayankdevnani
  • mayankdevnani
ok but my answer is right
anonymous
  • anonymous
Ok, so can you teach it to me calculusfunctions??
calculusfunctions
  • calculusfunctions
@TheViper yet you did it again.
calculusfunctions
  • calculusfunctions
Yes @harrisc1221
anonymous
  • anonymous
Ugh!!! I just need help figuring out how to simplify this problem!!!!
calculusfunctions
  • calculusfunctions
@harrisc1221 I was typing up a lesson for you and my comp lost the connection so allow me a few minutes to type it up again. Thanks.
anonymous
  • anonymous
Thank You @calculusfunctions
anonymous
  • anonymous
The actual assignment is multiplying radicals, but I can multiply them I just can't simplify them if they have variables and exponents.
calculusfunctions
  • calculusfunctions
\[\sqrt[n]{ab}=\sqrt[n]{a}\sqrt[n]{b}\] Example:\[\sqrt{54x ^{5}}=\sqrt{54}\sqrt{x ^{5}}\]Simplify each square root factor. First\[\sqrt{54}\]The greatest perfect square 54 is divisible by is 9. Thus\[\sqrt{54}=\sqrt{9}\sqrt{6}=3\sqrt{6}\]Next simplify\[\sqrt{x ^{5}}\]To find the square root of a variable, we divide the exponent by 2. Thus find the closest exponent that is divisible by 2. In our example the closest even number to 5 is 4. Thus\[\sqrt{x ^{5}}=\sqrt{x ^{4}}\sqrt{x}=x ^{2}\sqrt{x}\]Now\[\sqrt{54x ^{5}}=(3\sqrt{6})(x ^{2}\sqrt{x})=3x ^{2}\sqrt{6x}\]Understand @harrisc1221 ?
calculusfunctions
  • calculusfunctions
@harrisc1221 sorry it took longer because I lost the connection again.
calculusfunctions
  • calculusfunctions
Now @harrisc1221 could you please show me your solution if you understood so that I may see that you have the correct answer.
anonymous
  • anonymous
i've got 3*3*5*x^3*x^3
calculusfunctions
  • calculusfunctions
@Mpost1994 That is what I meant by teaching. As for your comment above, you're clearly not a psychic because FYI I am a teacher who loves teaching so much that I devote almost all my free time to help as many people as I can on this site and others. I would appreciate it if you did not waste anymore of mine and others valuable time.
calculusfunctions
  • calculusfunctions
@harrisc1221 is this your final answer?
anonymous
  • anonymous
No, it's what I have so far. I don't know how to write it out in the correct format @calculusfunctions
calculusfunctions
  • calculusfunctions
@harrisc1221 did you understand the lesson along with the example I gave?
anonymous
  • anonymous
Some of it said there was a path processing error
calculusfunctions
  • calculusfunctions
Obviously @Mpost1994 you have no respect for teachers.
anonymous
  • anonymous
math*
anonymous
  • anonymous
Can you all battle it out somewhere else, I came here because I am having trouble with this and the bickering back and forth is not making it any better!!!
calculusfunctions
  • calculusfunctions
I'm sorry @harrisc1221 I can't teach wile @Mpost1994 continues to be disruptive and obnoxious. @harrisc1221 let me know when he's gone.
anonymous
  • anonymous
I am leaving now. Sorry for saying something on your question post list. Bye now.
anonymous
  • anonymous
The least you could do is have respect for someone else!!!! I am the one that is having trouble with math and if you have a problem with what someone is saying then send them a message, but DON'T litter my message board with this crap!!
anonymous
  • anonymous
Your welcome.
anonymous
  • anonymous
I could always postpone bed and keep going.
anonymous
  • anonymous
If you're not willing to help I suggest you get off my question post!!! Gah, there is something called respect and you need to know what it is!! I came here as a last resort but unfortunately I can't even get any help here. So thank you for being a douchebag!!! I hope you're happy, because I am pissed!!!!!!
terenzreignz
  • terenzreignz
hey, if I might interrupt? I'm sorry if I disrupt @calculusfunctions line of thought, but perhaps it might be easier to see things in terms of exponents?
anonymous
  • anonymous
Ok, what do you mean by that @terenzreignz
terenzreignz
  • terenzreignz
Well, use laws of exponents to your advantage... Such as... \[(mn)^{p}=m^{p}n^{p}\]\[(m^{p})^{q}=m^{pq}\]\[\sqrt{m}=m^{\frac{1}{2}}\]
calculusfunctions
  • calculusfunctions
@terenzreignz go ahead because of @Mpost1994 I can't think anyway but as to your comment I did explain in terms of exponents.
calculusfunctions
  • calculusfunctions
*using exponents. Did you not read the lesson I posted above?
anonymous
  • anonymous
Am i the only one that keeps having the [math processing error] on their screen?
mathslover
  • mathslover
@harrisc1221 try to press ctrl+F5
calculusfunctions
  • calculusfunctions
I've never ever been so disrespected by any student as I have today by @Mpost1994
anonymous
  • anonymous
It's still not showing up @mathslover
mathslover
  • mathslover
@Mpost1994 , : as per openstudy code-of-conduct ( http://openstudy.com/code-of -conduct ) : Don't just provide the answer to a problem when someone else is in the middle of helping! But if you want to help, by all means, join in! So, I request you to NOT interrupt between the answer process of a user to the asker , I hope you will value the above point and will not devalue the question/answer process from now. Thanks! Oh btw , @harris1994 and @calculusfunctions I am impressed with both of your's discussion and interaction, this is the perfect use of OpenStudy .
calculusfunctions
  • calculusfunctions
@harrisc1221 \[\sqrt{45x ^{9}}=\sqrt{45}\sqrt{x ^{9}}\]Correct?
calculusfunctions
  • calculusfunctions
I'm not going to let the low lives like @Mpost 1994 detract me from teaching. He thinks he got to me but then that would like letting a terrorist win. Therefore I'm going to continue and not let scum bother me.
calculusfunctions
  • calculusfunctions
So @harrisc1221 let's continue shall we?
anonymous
  • anonymous
YES! @calculusfunctions
calculusfunctions
  • calculusfunctions
So first let's simplify\[\sqrt{45}\]first. Based on the example I gave, what do you think we should do first? Did you even read my example carefully?
anonymous
  • anonymous
we should simplify the square root of 54 first @calculusfunctions
calculusfunctions
  • calculusfunctions
Yes so then read the steps I explained to do that and simplify \[\sqrt{45}\]
anonymous
  • anonymous
which would be 3*3*5 @calculusfunctions
calculusfunctions
  • calculusfunctions
Yes the greatest perfect square that 54 is divisible by is 9. Thus??
anonymous
  • anonymous
I'm still having a hard time reading your input because of the math processing error, sorry.
calculusfunctions
  • calculusfunctions
\[\sqrt{45}=\sqrt{9}\sqrt{5}=?\]
calculusfunctions
  • calculusfunctions
I'm not sure why you're seeing error. I'm not experiencing the same issue.
anonymous
  • anonymous
\[\sqrt[3]{5}\]
anonymous
  • anonymous
I don't know either I have pushed ctrl and F5
calculusfunctions
  • calculusfunctions
LOL I think you mean\[3\sqrt{5}\]
anonymous
  • anonymous
I can only see you're reply if you tag me in the post for some reason @calculusfunctions
calculusfunctions
  • calculusfunctions
@harrisc1221 you mean\[3\sqrt{5}\]Do you see it now?
anonymous
  • anonymous
lol yes
calculusfunctions
  • calculusfunctions
Sorry @harrisc1221 but this @Mpost piece of disrespectful trash still keeps bothering me. The problem is that the moderators aren't around at the moment so he seem to taking advantage. But like I said we don't let terrorists win so let's continue.
calculusfunctions
  • calculusfunctions
@harrisc1221 next we have\[\sqrt{x ^{9}}\]The square root of a variable is found by dividing the the exponent of the variable by 2. This implies that the exponent must be even Thus what is the closest even number to 9?
anonymous
  • anonymous
8
calculusfunctions
  • calculusfunctions
@harrisc1221 correct so then\[\sqrt{x ^{9}}=?\]
anonymous
  • anonymous
wow alot has gone on here lol @calculusfunctions u r a great math teacher dont let any one tell you diffrent
anonymous
  • anonymous
x^8*x
lgbasallote
  • lgbasallote
nice work here @calculusfunctions just the way it should be
calculusfunctions
  • calculusfunctions
Thank you @mikala1 It's because of decent, respectful, hardworking, motivated students like yourself, @harrisc1221, @mathslover, and many others that I will never stop and I refuse to allow a few individuals such as @Mpost 1994 to be problematic.
lgbasallote
  • lgbasallote
this is actually an excellent example that solving by examples is a very efficient way of teaching
calculusfunctions
  • calculusfunctions
@lgbasallote thank you for your kind words. I appreciate the respect and the support from students like you, as I mentioned in the above comment. Thank you!!!!
lgbasallote
  • lgbasallote
even more efficient than actually telling the first few steps of the solution P.S. <----not a student
calculusfunctions
  • calculusfunctions
@harrisc1221 yes\[\sqrt{x ^{9}}=\sqrt{x ^{8}}\sqrt{x}=?\]
calculusfunctions
  • calculusfunctions
LOL @lgbasallote I apologize. I didn't know you were not a student. Are you also a teacher?
anonymous
  • anonymous
Ok, so now I am lost after that last step
lgbasallote
  • lgbasallote
i would assume "also" means you're a teacher? and yes, i am a liberal arts professor
calculusfunctions
  • calculusfunctions
@harrisc1221 What is \[\sqrt{x ^{8}}=?\]What did I say earlier about taking the square root of a variable?
anonymous
  • anonymous
It is divided by 2
calculusfunctions
  • calculusfunctions
@harrisc1221 what is divided by 2?
anonymous
  • anonymous
the exponent
calculusfunctions
  • calculusfunctions
@lgbasallote you assume correctly sir! I math and physics.
anonymous
  • anonymous
You would dived 8 by 2 and get 4
calculusfunctions
  • calculusfunctions
@harrisc1221 \[\sqrt{x ^{8}}=?\]
anonymous
  • anonymous
That is what I meant, I can't get the equation function to work right
anonymous
  • anonymous
then x = x
calculusfunctions
  • calculusfunctions
@harrisc1221 then\[\sqrt{x ^{9}}=\sqrt{x ^{8}}\sqrt{x}=?\]
calculusfunctions
  • calculusfunctions
@mikala1 I guess he's gone for now. He did message saying that he would have to go soon. I have to go in a bit as well but is there anything I can help you with before I do?
anonymous
  • anonymous
no i was just watching u do ur leaason so i could learn
calculusfunctions
  • calculusfunctions
@mikala1 that's great. Did you learn anything and are you good with those linear equations now?
anonymous
  • anonymous
just a little im not that far yet lol im only in 9 th grade
terenzreignz
  • terenzreignz
@calculusfunctions Your patience is inspiring... It comes as no surprise that you're into teaching :D
calculusfunctions
  • calculusfunctions
@mikala1 yes i already knew you were in Grade 9 because you were studying linear equations.
calculusfunctions
  • calculusfunctions
@terenzreignz Thank you. I appreciate the encouragement.
anonymous
  • anonymous
lol just a little but i shall have more question next week for u
calculusfunctions
  • calculusfunctions
@mikala1 of course! Whenever you need me, simply let me know.
anonymous
  • anonymous
ok sheldon
anonymous
  • anonymous
loll
calculusfunctions
  • calculusfunctions
Haha! I see that I remain a mystery to you. LOL. But seriously I appreciate the compliment, although I don't see myself as being as intelligent as Sheldon.
anonymous
  • anonymous
u r for real lol and hes real not that smart in dating world lol
calculusfunctions
  • calculusfunctions
LOL. I love that show!! My ringtone is the theme song.
calculusfunctions
  • calculusfunctions
Anyway I have to go now but you like I said, you let me know if you want my help. Alright?
anonymous
  • anonymous
lol u rwaly do sound like him thogh n ok
anonymous
  • anonymous
have a great day
calculusfunctions
  • calculusfunctions
You too! Bye!
anonymous
  • anonymous
Yeah still needing help with help with this

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