frx
Can someone show me way \[\sqrt{(16i)^{2}+4(7+9i)} = 3+4i\]



This Question is Closed

frx
Best Response
You've already chosen the best response.
0
why*

Rimplestorck
Best Response
You've already chosen the best response.
0
you could maybe square both sides? does it work?

frx
Best Response
You've already chosen the best response.
0
Well, I don't have the answer 3+4i from the beginning so that wouldn't work

frx
Best Response
You've already chosen the best response.
0
@mukushla could you please check this out?

mukushla
Best Response
You've already chosen the best response.
1
simplify under radical first

frx
Best Response
You've already chosen the best response.
0
\[\sqrt{(3512i)+(28+36i)}\]

frx
Best Response
You've already chosen the best response.
0
?

mukushla
Best Response
You've already chosen the best response.
1
yes right and..simplify further

frx
Best Response
You've already chosen the best response.
0
\[\sqrt{7+24i}\]

mukushla
Best Response
You've already chosen the best response.
1
now see this ... very complete article about taking square root of a complex number

frx
Best Response
You've already chosen the best response.
0
Ok, thanks :)

mukushla
Best Response
You've already chosen the best response.
1
no problem

frx
Best Response
You've already chosen the best response.
0
That pdf was really great, can't thank you enough! :D