M,N互为相反数,a,b互为倒数,X=—(—4),求ab/2+2010(m+n)+x的值
问题描述:
M,N互为相反数,a,b互为倒数,X=—(—4),求ab/2+2010(m+n)+x的值
答
M,N互为相反数,M+N=0
a,b互为倒数,ab=1
X=-(-4)=4
ab/2+2010(m+n)+x=1/2+0+4=4.5