Odpowiedź:
a) 3a(4-2a)+2a(3a-5)=12a-6a^2+6a^2-10a=2a
2a=2*3=6
b) 4p(5+3p)-2p(7+6p)= 20p+12p^2+14p+12p^2=6p
6p=6*-2=-12
c) -18m^2- 15m + 9m + 18 = -18m^2-6m+16
-18m^2-16m+16= 18*1^2-16*1+16=-8
