Answer:
7 - 2i
Step-by-step explanation:
Here we have two complex numbers and wish to combine them. Complex numbers have real and imaginary parts. We sum up the real parts and the imaginary parts separately:
-9 - 7i
+16 + 5i
------------
7 - 2i This is the sum of -9 -7i and 16 + 5i.
Obtuse
Answer: 81
Step-by-step explanation: Because, (-3)^4=-3*-3*-3*-3=-(-81)=81
A=0,-2 1/2
w=4
adding a negative is like subtracting so w=11-7
