The Lorax planted 5 times as many seeds as there were trees cut down. If there is a total of 72 seeds planted and cut down trees, how many seeds did the Lorax plant?

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two

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?