Jawabanmu

2014-04-14T08:27:21+07:00
2^-3 = 1/2^3 = 1/8
3^-2 = 1/3^2 = 1/9

1/8+1/9 = 9/72+8/72 = 17/72

maaf kalau salah
semoga membantu:)

1 5 1
2014-04-14T08:30:08+07:00
2^-3 + 3^-2 =  \frac{1}{2^3}  \frac{1}{3^2}
                  =  \frac{1}{8} +  \frac{1}{9} =  \frac{9 + 8}{72}  =  \frac{17}{72}

semoga membantu...