How do you know that the sum of of (-2)
5
and
gis rational?
O The sum is a terminating and a repeating decimal.
O The sum is a non-terminating and a non-repeating decimal.
O The sum is a fraction.
The sum is an integer.
h

thus, the first answer choice, y = sec x, is the correct one

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?

the answer is 23.39370079

step-by-step explanation: