计算:1/x2yz-2/xy2z+3/xyz2= _ .
问题描述:
计算:
-1
x2yz
+2 xy2z
= ___ .3 xyz2
答
原式=
-yz
x2y2z2
+2xz
x2y2z2
3xy
x2y2z2
=
.yz-2xz+3xy
x2y2z2
故答案是:
.yz-2xz+3xy
x2y2z2