Angelica is working with function machines. she has the two machines shown at right. she wants to put them in order so that the output of the machine becomes the input of the second. her initial input is 6.
a. in what order must she puts the machine to get a final output to

3.07*10^-4

move the decimal 4 places to the left

.000307

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?