I need complete and clear solution. Pls answer. Ty

Answer from numbers 2-10.

Instructions: Given the table below, analyze and evaluate the following summations. Xi YA OBSERVE 2 72 - Ending Numba 3 OwUAW Notation. Symbol The Function 3 i=1 Sharing Number 1. El=zx, = X2 + X3 + X4 3. Ef-[(x + 3) ]2 =3+2+4=9 2. El=1 3x 4. Ef-2(x, + yi)5. Zi= =(y, + x ) 8. Et(x, + yi) 9. E15(x, + 1) 7. E(x + y? ) 10. E1=()' (x )