Răspuns:
[tex] \mathsf{a= 0}[/tex]
Explicație pas cu pas:
[tex] \mathsf{a=(4+3i)^2+(3-4i)^2}[/tex]
[tex] \mathsf{a= (16 + 24i+9i^2)+(9-24i+16i^2)}[/tex]
[tex] \mathsf{a= 16 + 24i+9i^2+9-24i+16i^2}[/tex]
[tex] \mathsf{a= 16 +9i^2+9+16i^2}[/tex]
[tex] \mathsf{a= 25+25i^2}[/tex]
[tex] \mathsf{a= 25+25(-1)}[/tex]
[tex] \mathsf{a= 25-25}[/tex]
[tex] \mathsf{a= 0}[/tex]
Răspuns:
Explicație pas cu pas:
a = (4+3i)^2 + (3-4i)^2
= 16 + 24i + 9i^2 + 9 - 24i + 16i^2
= 16 + 9 - 9 - 16 = 0 numar natural
