化简m²+(8/m)²=n²+(8/n)²

问题描述:

化简m²+(8/m)²=n²+(8/n)²

原式变为m^2-n^2+(8/m)^2-(8/n)^2=0,
m^2-n^2-64(m^2-n^2)/(mn)^2=0,
(m^2-n^2)[(mn)^2-64]=0,
∴m=土n或mn=土8.