a) 1
-1 i 1 bo (-1)^2=1 i 1^2=1
b) 36
6 i -6 bo (-6)^2=36 i 6^2=36
c) 400
-20 i 20 bo (-20)^2=400 i 20^2=400
d) 1,44
-1,2 i 1,2 bo (-1,2)^2=1,44 i 1,2^2=1,44
e) 0,16
-0,4 i 0,4 bo (-0,4)^2=0,16 i 0,4^2=0,16
f) \frac{4}{25}
-\frac{2}{5} i \frac{2}{5} bo (-\frac{2}{5})^2=\frac{4}{25} i (\frac{2}{5})^2=\frac{4}{25}
g) 3 \frac{1}{16}=\frac{49}{16}
-\frac{7}{4} i \frac{7}{4} bo (-\frac{7}{4})^2=\frac{49}{16} i (\frac{7}{4})^2=\frac{49}{16}
h) 2 \frac{7}{81}=\frac{169}{81}
-\frac{13}{9} i \frac{13}{9} bo (-\frac{13}{9})^2=\frac{169}{81} i \frac{13}{9}=\frac{169}{81}