## Qawi 3 years ago sqrt 81/ sqrt 7

1. Qawi

options 9/7 9sqrt7/7 sqrt7/7 9/sqrt7

2. amistre64

sqrt are like blobs of jelly; they cen combine and separate at will

3. amistre64

i recall alot of texts saying that sqrt in the bottom tho are not proper .... for some reason

4. RyanL.

$\frac{\sqrt {81}}{ \sqrt {7}} =\frac{\sqrt {9*9}}{ \sqrt {7}}$

5. RyanL.

you think can simplify it from there?

6. amistre64

there are 2 equal options .....

7. RyanL.

no look again

8. Qawi

9 / sqrt 7

9. RyanL.

good job you are right$\frac{9 }{ \sqrt {7}}$

10. amistre64

$\frac{9\sqrt7}{7}=\frac{9}{\sqrt7}$ $\frac{\sqrt7}{7}=\frac{1}{\sqrt7}$ $\frac{\sqrt7\sqrt7}{7\sqrt7}=\frac{1}{\sqrt7}$ $\frac{7}{7\sqrt7}=\frac{1}{\sqrt7}$ $\frac{1}{\sqrt7}=\frac{1}{\sqrt7}$

11. amistre64

so the issue is; which one is "proper" form

12. Qawi

yess!!!! thank you so much

13. RyanL.

I think the issue is where the boundaries are since I can interpret in a completely different way if I try.

14. RyanL.

That's why I don't trust answer choices....

15. Qawi

thanks anyway amistre

16. amistre64

i read it right ... confused myself as a sipped the coffee

17. amistre64