Odpowiedź:
[tex]3a(2b + 4) + 2a(3 - 5b) = 6ab + 12a + 6a - 10ab = - 4ab + 18a[/tex]
[tex] - 2x(5x - y) - x(8x - 2y) = - 10 {x}^{2} + 2xy - 8 {x}^{2} + 2xy = - 18 {x}^{2} + 4xy[/tex]
[tex]5p(2 + 3r - p) - 3p(2p - 4) = 10p + 15pr - 5 {p}^{2} - 6 {p}^{2} + 12p = 22p + 15pr - 11 {p}^{2} [/tex]
[tex]3k(4 - 5m + 2k) - 3m(2 - 3k) = 12k - 15km + 6 {k}^{2} - 6m + 9km = 12k - 6km + 6 {k}^{2} - 6m[/tex]
