7 + 2 = 9 and 9/12 + 11/12 = 20/12 = 1 8/12 = 1 2/3
9 + 1 2/3 = 10 2/3
Given: Different equations
To Determine: Which would be best solved using difference of two squares
Solution
The factorization of a difference of two squares is given below

Let us examine each of the given equation




From the above,

The two equation above can be solved by difference of two square, but the equation below is the easiest solved using differnce of two square
x² - 25 = 0
Answer=4.24
Step-by-step explanation:
It doubles every 4 hours, so after 24 hours there will be 6 doublings.
2^6 = 64
So, the population will be (3,000,000 * 64) or 192,000,000 in 24 hours.
The answer is B.