题目内容
计算
÷
+
| x4-16 |
| x4+8x2+16 |
| x2-x-2 |
| x2+4 |
| x2+x |
| x2+2x+1 |
原式=
•
+
(4分)
=
+
(5分)
=2. (6分)
| (x2+4)(x2-4) |
| (x2+4)2 |
| x2+4 |
| (x+1)(x-2) |
| x(x+1) |
| (x+1)2 |
=
| x+2 |
| x+1 |
| x |
| x+1 |
=2. (6分)
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