计算下列各题 (1)2c^分之ab^2乘以-3a^2b^2分之4cd (2)mn分之m-1乘以m-1分之n

问题描述:

计算下列各题 (1)2c^分之ab^2乘以-3a^2b^2分之4cd (2)mn分之m-1乘以m-1分之n

1:ab^2/2c^除以-3a^2b^2/4cd
=-ab^2/(2c^2)×[4cd/(3a^2b^2)]
=-2d/(3ac)
2:(a²/b)*(b/a)=a
(m-1)/(mn)*n/(m-1)=1/m