How do I do this complete mindblank (1 Viewer)

[Stressedaf0666]

I used the normal quadratic formula and in the square root ingot -60-32i it seems sus with the negative and DK if it's correct can someone verify. Also wut do I do with the negative there

 

[cossine]

If you want you could try completing the square to double check your answer. Completing the square and the quadratic formula are equivalent.

 

[Stressedaf0666]

If you want you could try completing the square to double check your answer. Completing the square and the quadratic formula are equivalent.

Aye shud do that, is there any case where we can only use one of both methods

 

[Drongoski]

View attachment 35837
I used the normal quadratic formula and in the square root ingot -60-32i it seems sus with the negative and DK if it's correct can someone verify. Also wut do I do with the negative there

You can use the "Terry Lee" method to find the square root of -60-32i. Here's how:

 

[cossine]

Aye shud do that, is there any case where we can only use one of both methods

Sorry I messed up refer to Drogonski's answer