Answer:
1) 7i
2) 7+6i
3)4i
4)-15i
5)-9i-5
6)15+1
7) i+2
8)-2+i
Step-by-step explanation:
1)combine like terms there are 7 i's
2)combine like terms can add 3+4(can't add 6i)
3)combinelike terms theres 4 i's
4)same there are -15i 's
5)there are 9 - i 's and -1+ (-4)=-5
6)combine like terms
7) combine like terms
8)combine like terms
