Asked by Tom

What is the sqaure root of -180x^8

I got 6x^4 i radical 5
Answered by Steve
me too

Usually the i comes last, though.
Answered by Tom
what do you mean it comes last
Answered by Steve
usually a complex number is written a+bi, and coefficients come before variables.

I know it is tempting to put the √5 last so it does not get confused with following numbers, but that's just orthography.

here, a is zero, so just bi:

6√5 x^4 i