Q. 3
<u>b∈(2,∞)</u>
Q. 4
<u>r∈(-∞, -5)</u>
7÷ 1/3
KCF---Keep->Change->Flip
7/1 × 3/1 = 21/1==21
Answer:
0
Step-by-step explanation:
w+1/w=(2+2i)+1/(2+2i)
=(2+2i)+(2+2i)-1
=0