问题
解答题
|
答案
原式=
÷(3-x x-2
-5 x-2
)(x+2)(x-2) x-2
=
÷3-x x-2 9-x2 x-2
=
×3-x x-2 x-2 (3-x)(3+x)
=
.1 x+3
故答案为
.1 x+3
|
原式=
÷(3-x x-2
-5 x-2
)(x+2)(x-2) x-2
=
÷3-x x-2 9-x2 x-2
=
×3-x x-2 x-2 (3-x)(3+x)
=
.1 x+3
故答案为
.1 x+3