упростите выражение:

1. 6*12*a*2*b; 3. 4m*7n*2;


2. 8*c*5*d*2; 4.3p*6k*4t.

6*12*a*2*b=(6*12*2)*ab=144ab----------------------4m*7n*2=(4*7*2)*mn=56mn-----------------------8*c*5*d*2=(8*5*2)*cd=80cd---------------------3p*6k*4t=(3*6*4)*pkt=72pkt