In integral questions including exponents of variable (x^5) we just collect like terms and add them. But what if there is no variables involved how would you solve the expression.

Example how would you solve the following:

a) 2 - 3 / 2 + 2 - 1 / 2 + 2 1 / 2 + 2 3 / 2

(2 raise to power negative 3 over/divide by 2) plus ( 2 raise to power negative 1 over/divide by 2) plus ( 2 raise to power 1 over/divide by 2) plus (2 raise to power 3 over/divide by 2)

Thanks!