tolong di jawab ya?

3. (3^(-1)+3^(0)+3)
=(⅓+1+3)
=⅓+4
=4⅓
4. (2^(-2)+2^(0))/(2+2^(-1))
=(¼+1)/(2+½)
=1¼/2½=(5/4)/(3/2)
=5/4×⅔=10/12=5/6
5. -3^(-3)+3^(-3)
= -1/27+1/27= 0