So 27
2. a recipe for sparkling grape juice calls for 15 quarts of sparkling water and
quart of grape juice.
a. how much sparkling water would you need to mix with 9 quarts of grape juice?
b. how much gape juice would you need to mix with
quarts of sparkling water?
chow much of each ingredient would you need to make 100 quarts of punch?

(x) - (y) = (1 + 4i)

lol! it is not weird, because that is how i feel when i get to know that there is a lot of people in one area or website at one time. i always want to make new friends! even if they are online friends.

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?