anonymous
  • anonymous
√7x^6y^3 8z
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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amistre64
  • amistre64
I know what it means individually; but when you put them all together like that it just loses all rhyme and reason ...
anonymous
  • anonymous
?
amistre64
  • amistre64
my point exactly :) How do you expect anyone to make any sense of this question? You might as well asks: fiwjnduudhne&%9sdj2((

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anonymous
  • anonymous
R u making fun of me? I am new here so maybe I wrote it wrong but this is what it looks like in my book
amistre64
  • amistre64
then you should burn your book.... its not making fun of you; its trying to figure out what is written and discern some sensible form or function to it...
amistre64
  • amistre64
as is; its complete and utter gibberish
anonymous
  • anonymous
\[\sqrt{7x ^{6}y ^{3}}\] I don't know how to write the 8z underneath it..
amistre64
  • amistre64
is it a divde by 8z? or is the 8z under the radical too?
amistre64
  • amistre64
sqrt(7x^6 y^3) ------------- ?? or is the 8z included in the sqrt? 8z
anonymous
  • anonymous
just like you wrote it that is what it looks like with the line underneath it..
amistre64
  • amistre64
and I take it they want this to be simplified?
anonymous
  • anonymous
yes
amistre64
  • amistre64
\[\frac{\sqrt{7x^6y^3}}{8z} \rightarrow \frac{x^2 y \sqrt{7y}}{8z}\]
amistre64
  • amistre64
or the other possibility is this....
amistre64
  • amistre64
\[\sqrt{\frac{7x^6y^3}{8z}} \rightarrow \frac{x^2y \sqrt{7y}}{2\sqrt{2z}}\]
amistre64
  • amistre64
it all depends on if the 8z is a part of the square root; or simply under it
anonymous
  • anonymous
I think it's under it. The answer in the book is \[x ^{3}y \sqrt{14yz}\] and under it is 4z
anonymous
  • anonymous
just not sure on how they got it...
amistre64
  • amistre64
its a part of it then..... and I typoed that first x; its x^3 ; then they do something called rationalizing the denom becasue they hate to see radicals in the bottom of a fraction
amistre64
  • amistre64
it goes like this: \[\frac{7^{1/2}x^{6/2}y^{3/2}}{8^{1/2}z^{1/2}} \rightarrow \frac{x^3 y \sqrt{7y}}{2 \sqrt{2z}} \rightarrow \frac{x^3y \sqrt{7y*2z}}{2} \rightarrow \frac{x^3y \sqrt{14yz}}{2}\]
amistre64
  • amistre64
the 4z under would be odd
anonymous
  • anonymous
oh okay that makes sense :) Thank you
amistre64
  • amistre64
lol.... I just got why 4z is on the bottom :) I forgot a step .....
amistre64
  • amistre64
2 * sqrt(2z) * sqrt(2z) = 2*2z = 4z lol
anonymous
  • anonymous
lol it's okay thanks for your help

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