Выполните умножение:а) (2k-m)(3k+1)= б)(-0.3pq+p)(5p-q)=

(2k-m)(3k+1)=2k*3k-m*3k+2k*4-m*1=6k²-3km+8k-m (-0.3pq+p)(5p-q)=-0.3pq*5p+p*5p-0.3pq*(-q)+p*(-q)=-1.5p²q+5p²+0.3pq²-pq