题目内容
计算
÷
÷
.
| x2+2x+4 |
| x2+4x+4 |
| x3-8 |
| 3x+6 |
| 1 |
| x2-4 |
原式=
÷
÷
=
•
•(x+2)(x-2)
=3.
| x2+2x+4 |
| (x+2)2 |
| (x-2)(x2+2x+4) |
| 3(x+2) |
| 1 |
| (x+2)(x-2) |
=
| x2+2x+4 |
| (x+2)2 |
| 3(x+2) |
| (x-2)(x2+2x+4) |
=3.
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