Respuesta :

Yeah01

[tex]{\texttt{\huge{\red{SOLUTION :-}}}}[/tex]

SOME IMPORTANT POINTS WHICH SHOULD BE KNOWN BEFORE SOLVING THE QUESTION :-

  • √-1 = i

GIVEN THAT :-

√-9 -6

=> √(3×3×-1) -6

=> 3√-1 - 6

=> 3i -6

=> -6 + 3i

(answer)