Question

已知m的二次方＝25,|n|＝0.2,|m-n|＝n-m,求：〔1｝m,n的值；｛2}m的2005次方×n的2004次方

Answer 1

(1)m^2=25

m=+5 m=-5

|n|＝0.2

n=+0.2 n=-0.2

又|m-n|=n-m

所以m