a+b=0,c*d=1 m=±2所以 0-2014+1/4*4 =-2014+1 =-2013望采纳
a,b互为相反数,则a+b=0c,d互为倒数,则cd=1|m|=2,则m²=4所以,原式=0-2014+(1/4)*4=-2013