Question

http://prntscr.com/4cbg5u

Answer 1

@triciaal

Answer 2

i had trouble with this question

Answer 3

use the same principle
what are the factors of 72 x^3 and 50 x^2

Answer 4

9 and 8. 10 and 5

Answer 5

yes those are factors but we are interested in
prime factors and perfect square factors

Answer 6

for 72 use 2 *36 to give 6 rt 2 why?
break 9 * 8 down to 3 * 3 * 2 *2*2
when you take the root = 3*2 *rt 2 = 6 rt 2

Answer 7

factors of 50 you have 10 and 5 but 10 can be broken down to 2 * 5 (we want prime factors)
rt 50 x^2 = rt (2 * 5 * 5 * x * x)
=5 x rt 2

Answer 8

so we keep everything the same and it is A?

Answer 9

original 72 x^3 / 50 x ^2
express with the factors then simplify

Answer 10

\[ \Large
\frac { \sqrt{72x^3} }{\sqrt{50x^2}} = \sqrt{\frac{72x^3}{50x^2}} = \sqrt{\frac{36x}{25}}
= \frac 65\sqrt{x}
\]