HELP PLZ I WILL MARK YOU BRAINLIEST

answer is 147

Step-by-step explanation:

3 1/2 times 3 1/2 is 7/4

7/4 ×12= 147

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?