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anonymous
 5 years ago
what is the square root of 20x over X^3
anonymous
 5 years ago
what is the square root of 20x over X^3

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\sqrt{(\frac{20x}{x^3})}\] This?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0YEEEESSSSSSSSSSSSSSSSSSSSSS

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well, work with the inside of the square root first. How can you simplify \(\frac{20x}{x^3}\)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you square out the 20 and get 2 square root 5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I said to ignore the square root first. Just deal with inside the square root for a second.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\frac{20x}{x^3}\] Can be simplified to what?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you would multiply the numerator by \[ \times ^{3}\] and get \[20x ^{4}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No. \[\frac{20x}{x^3} = \frac{20*x}{x*x*x}\] We can cancel one x from top and bottom. \[=\frac{20}{x^2}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ohhhh and then I would get \[\sqrt{20} \over \sqrt{x ^{?}}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then get \[2\sqrt{5} \over x ^{2}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0its \[2\sqrt{5} \over \sqrt{x ^{2}}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then get \[2x ^{2} \sqrt{5} \]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0please tell me if that is right!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No. \(\sqrt{x^2} = x\)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So you have \[\frac{2\sqrt{5}}{\sqrt{x^2}} = \frac{2\sqrt{5}}{x} \]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think you should review fractions because you keep moving the things in the denominator up to the numerator.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You can't really do that.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[a*b \ne \frac{a}{b} \] Unless a=1 and b=1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0my teacher taught us that way. She said that youcan not have a square root in the demoninator

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No, you can. Often people prefer to have only square roots in the numerator, but in that case you must multiply the top and bottom by an extra factor of the square root. \[\frac{a}{\sqrt{b}} \] \[= \frac{a}{\sqrt{b}} *1 \] \[= \frac{a}{\sqrt{b}} *\frac{\sqrt{b}}{\sqrt{b}} \] \[= \frac{a\sqrt{b}}{\sqrt{b^2}} \] \[= \frac{a\sqrt{b}}{b}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yea that looks like the way she said it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Does that make sense? You cannot just move the square root in the denominator up to the numerator. Otherwise you get bad values. \[\frac{a}{\sqrt{b}} = a\sqrt{b} \implies \frac{1}{\sqrt{b}} = \sqrt{b} \implies 1 = \sqrt{b^2} \implies b = 1\] So the only thing you can bring directly from the numerator to the denominator is a 1.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Or the denominator to the numerator.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I'm not a teacher.. Just a person who's done a lot of math and tutor people. Review your simplification rules for fractions: http://www.khanacademy.org/video/simplifyingrationalexpressions1?playlist=Algebra%20I%20Worked%20Examples

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0THANK YOU GOD BLESS YOU!!!! GOODNIGHT
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