Answer:

Step-by-step explanation:
Square of the monomial is 
To get the monomial we take square root
Lets take square root for each term

because square root of 4 is 2

2/2 is 1 so, its a^n
Required monomial is 
Point III is about <em>real interest rate</em>
point I doesn't apply since both nominal and effective ir are calculated by year
let alone the fact that if you look close to those numbers it would probably mean that the loan had 1year and 1 day duration :)
the II answer is the correct one
if the loan is compounded at 6 months you have to add the interest of the first 6 months interest to the total interest to find out the effective interest rate

So the final answer is 2/3
x = 6
Explanation:
use the pythagorean theorem which is <u>a^2 + b^2 = c^2</u>. 8 goes in either the a or b position and 10 is the longest side so it will go in the c position.