Question

Simplify 5+i/1+2i

Answer 1

a) 7-9i/5 b)7-i/5 c)3-9i/5
d) 3-i/5

Answer 2

a) part is the answer. Just multiply and divide the equation with (1-2i)

Answer 3

5+i / 1+2i

(5+i)(1-2i)/(1+2i)(1-2i)
=(5 - 9i +2) / (1 + 4)
=(7-9i)/5
=a)