Question

(1-2××3)2 desenvolva

Answer 1

(1-2××3)2=6
1-2=1×3=3×2=6

Espero ter ajudado

Answer 2

(-1)³+3(-1)².√2i/2)+3.(-1).(√2i/2)+(√2i/2)^3=
-1+3(√2i/2)-3.2i²/4-√2³i³/8
1/2+(3√2/2-2√2/8)i 
1/2+10√2i/8
1/2+5√2i/4