A force of pounds acts in the direction of ​° to the horizontal. The force moves an object along a straight line from the point ​(​,​) to the point ​(​,​), with distance measured in feet. Find the work done by the force. The work done is approximately

nothing ​foot-pounds.

​(Round to the nearest hundredth as​ needed.)

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?