若a,b互为相反数,c和d互为倒数,m的绝对值是根号2,a方减b方加(cd)除以(1加m方
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若a,b互为相反数,c和d互为倒数,m的绝对值是根号2,a方减b方加(cd)除以(1加m方
若a,b互为相反数,c和d互为倒数,m的绝对值是根号2,a方减b方加(cd)除以(1加m方
若a,b互为相反数,c和d互为倒数,m的绝对值是根号2,a方减b方加(cd)除以(1加m方
a+b=0 a=-b,
cd=1
|m|=√2 m²=2
(a²-b²+cd)÷(1+m²)
=(b²-b²+1)÷(1+2)
=1/3
a,b互为相反数;a方减b方=0
c和d互为倒数;(cd)=1
原式=0+1/(1+M2)=1/3