Odpowiedź:
Zadanie 9
a)
[tex]1m \times 4m = 4 {m}^{2} \\ 3m \times 1m = 3 {m}^{2} \\ 3 {m}^{2} + 4 {m}^{2} = 7 {m}^{2} [/tex]
b)
[tex]2m \times 1m = 2 {m}^{2} \times 2 = 4 {m}^{2} \\ 1m \times1m = 1 {m}^{2} \\ 5m \times 1m = 5 {m}^{2} \\ 4 {m}^{2} + 1 {m}^{2} + 5 {m}^{2} = 10 {m}^{2} [/tex]
c)
[tex]5m \times 5m = 25 {m}^{2} \\ 3m \times 3m = 9 {m}^{2} \\ 25 {m}^{2} - 9 {m}^{2} = 14 {m}^{2} [/tex]
d)
[tex]5 m \times 1m = 5 {m}^{2} \\ 2 {m} \times 1 {m} = 2 {m}^{2} \times 2 = 4 {m}^{2} \\ 4m \times 1m = 4 {m}^{2} \times 2 = 8 {m}^{2} \\ 5 {m}^{2} + 4 {m}^{2} + 8 {m}^{2} = 17 {m}^{2} [/tex]
