Here's the question you clicked on:
Qawi
sqrt 81/ sqrt 7
options 9/7 9sqrt7/7 sqrt7/7 9/sqrt7
sqrt are like blobs of jelly; they cen combine and separate at will
i recall alot of texts saying that sqrt in the bottom tho are not proper .... for some reason
\[\frac{\sqrt {81}}{ \sqrt {7}} =\frac{\sqrt {9*9}}{ \sqrt {7}}\]
you think can simplify it from there?
there are 2 equal options .....
good job you are right\[\frac{9 }{ \sqrt {7}}\]
\[\frac{9\sqrt7}{7}=\frac{9}{\sqrt7}\] \[\frac{\sqrt7}{7}=\frac{1}{\sqrt7}\] \[\frac{\sqrt7\sqrt7}{7\sqrt7}=\frac{1}{\sqrt7}\] \[\frac{7}{7\sqrt7}=\frac{1}{\sqrt7}\] \[\frac{1}{\sqrt7}=\frac{1}{\sqrt7}\]
so the issue is; which one is "proper" form
yess!!!! thank you so much
I think the issue is where the boundaries are since I can interpret in a completely different way if I try.
That's why I don't trust answer choices....
i read it right ... confused myself as a sipped the coffee
http://www.purplemath.com/modules/radicals5.htm no radicals under