How do you simplify #\sqrt { \frac { 81} { 169 } #?

Question

1285 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-11-22T18:54:26

#9/13#

We can use the principle that #sqrt(a/b)=sqrt(a)/sqrt(b)#:

#sqrt(81/169)=sqrt(81)/sqrt(169)=9/13#

Answer 2 · 2017-11-22T19:26:20

#+-9/13#

#sqrt(81/169)#

#=+-9/13larrcolor(blue)" note plus or minus"#

#9/13xx9/13=81/169#

#"and "-9/13xx-9/13=81/169#