Respuesta :

Answer:

1. 7i

2. 7 + 6i

3. 4i

4. -15i

5. -5-9i

6. 11 + i

7. 2 + i

8. i + 4

Step-by-step explanation:

PLZ mark brainliest, I can't DM people

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