Odpowiedź:
a) (x+7)(2x-1) = [tex]2x^{2}[/tex]-x+14x-7 = [tex]2x^{2}[/tex]+13x-7
b) (2a-1)(a+4) = [tex]2a^{2}[/tex]+8a-a-4 = [tex]2a^{2}[/tex]+7a-4
c) (4a-1)(2-3a) = 8a- [tex]12a^{2}[/tex]-2+3a = -[tex]12a^{2}[/tex] + 11a-2
d) ([tex]a^{5}[/tex]-1)(a+1) = [tex]a^{6} + a^{5} - a -1[/tex]
e) ([tex]2k^{2}[/tex]-1)(2k+1) = [tex]4k^{3} + 2k^{2} -2k-1[/tex]
f) (3-[tex]p^{3}[/tex])([tex]p^{2}[/tex]+1) = [tex]3p^{2} + 3 - p^{5} - p^{3}[/tex]
