18z-13=-4 solve for z

pls ask

the photograph is photographer and- in the process- ourselves.

step-by-step explanation:

wait this depends wether emily and zach how they are thinking.

yes they are the same.

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?