x=((30)/(5.15+1.84i))+(5.15+1.84i)

Question

i= square root of (-1)
final answer of x=10.3
please show me how you drive this equation to get the 10.3.
thank you so much.

Answer 1

http://www.jiskha.com/display.cgi?id=1285074559

Answer 2

very good, but when i want to proove it by x + y =10.3,
x=30/(5.15+1.84i), y=(5.15+1.84i)
how you drive this equation
30/(5.15+1.84i)+(5.15+1.84i)=10.3
thank you

Answer 3

See:
http://www.jiskha.com/display.cgi?id=1285095664