Răspuns :
[tex]a = ( - 8 + 5) - ( - 6 + 2)[/tex]
[tex]a = - 3 - ( - 4)[/tex]
[tex]a = - 3 + 4[/tex]
[tex]a = 1[/tex]
[tex]b = - 16 + 13 - ( - 2 + 1)[/tex]
[tex]b = - 3 - ( - 1)[/tex]
[tex]b = - 3 + 1[/tex]
[tex]b = - 2[/tex]
[tex]a) - a = - 1[/tex]
[tex]b) |a + b| = |1 - 2| = | - 1| = 1[/tex]
[tex]a = - 3 - ( - 4)[/tex]
[tex]a = - 3 + 4[/tex]
[tex]a = 1[/tex]
[tex]b = - 16 + 13 - ( - 2 + 1)[/tex]
[tex]b = - 3 - ( - 1)[/tex]
[tex]b = - 3 + 1[/tex]
[tex]b = - 2[/tex]
[tex]a) - a = - 1[/tex]
[tex]b) |a + b| = |1 - 2| = | - 1| = 1[/tex]
a = ( -8 + 5 ) - ( -6 + 2 )
a = ( -3 ) - ( -4 )
a = -3 + 4
a = 1
b = -16 + 13 - ( -2 + 1 )
b = -16 + 13 - ( -1 )
b = -16 + 13 + 1
b = -3 + 1
b = -2
a ) 1 → -1
b ) 1 + ( -2 ) =
= I 1 - 2 I
= I - 1 I → 1