Simplify the folowing expresions.
a. (4 − 2i)(5 − 3i)
b. (−2 + 3i)(−2 − 3i)
c. (1 + i)2
d. (1 + i)10 (hint: bn = (bn)mm)
e. −1 + 2i
1 − 2i
f. x2 + 4
x − 2i , provided x ≠ 2i

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches

the answer is  

a.

28 ft2

step-by-step explanation:

1/4 is the answer if i recall correctly.