X4 over nothing-36 hope this willl work
Answer:
Step-by-step explanation:

Could you confirm to me that this is in fact the problem? Do not report. I will edit this answer once you answer my question.
Step-by-step explanation:
f(x)=-x²+8x
By replacing x with -7, we get
f(-7)=-(-7)²+8×(-7)
=-49-56
=-105
Step-by-step explanation:
(-3+3i) - (8 – 9i)
-3+3i - 8 + 9i
-11+12i