[tex]6 \times 6 = 36[/tex]
[tex]8 \times 7 = 56[/tex]
diferența este 56-36= 20
b.
[tex]9 \times 9 = 81 \\ 8 \times 8 = 64 \\ 81 - 64 = 17[/tex]
[tex]8 \times 8 = 64 \\ 6 \times 9 = 54 \\ 64 - 54 = 10[/tex]
[tex]9 \times 8 = 72 \\ 6 \times 8 = 48 \\ 72 - 48 = 24 \\ [/tex]
c.
[tex]7 \times 9 = 63 \\ 9 \times 3 = 27 \\ 63 - 27 = 36[/tex]
d.
[tex]9 \times 6 = 54 \\ 7 \times 7 = 49 \\ 54 - 49 = 5[/tex]
[tex]8 \times 8 = 64 \\ 7 \times 7 = 39 \\ 64 - 39 = 25[/tex]
[tex]8 \times 9 = 72 \\ 9 \times 7 = 63 \\ 72 - 63 = 9[/tex]
