问题
解答题
计算. (1)
(2)
|
答案
(1)原式=
=y(3+x)+x(3+y) xy
;3x+3y+xy xy
(2)原式=
+1-m (1+m)(1-m)
=m+3 (1+m)(1-m)
.4 1-m2
计算. (1)
(2)
|
(1)原式=
=y(3+x)+x(3+y) xy
;3x+3y+xy xy
(2)原式=
+1-m (1+m)(1-m)
=m+3 (1+m)(1-m)
.4 1-m2