. Perform the following additions/subtractions in the group of the curve y^2 =x^3 +2x +3 mod 17. 1. (14,2)+(5,6) = (write your answer as (x,y) with no spaces) Is the result a point on the elliptic curve? (Y/N) ) 2. (14,2)+(14,6) = Is the result a point on the elliptic curve? (Y/N) ) 3. (14,2)-(5,4) = Is the result a point on the elliptic curve? (Y/N)

9. Perform the following additions/subtractions in the group of the curve y2=x3+2x+3mod17. 1. (14,2)+(5,6)= (write your answer as (x,y) with no spaces) Is the result a point on the elliptic curve? (Y/N) 2. (14,2)+(14,6)= Is the result a point on the elliptic curve? (Y/N) 3. (14,2)(5,4)= Is the result a point on the elliptic curve? (Y/N)