题目内容
(1)计算:|-3|-
+(π-3.14)0;
(2)
+
.
| 16 |
(2)
| 6 |
| x2-9 |
| 1 |
| x+3 |
(1)原式=3-4+1
=0;
(2)原式=
+
=
=
=
.
=0;
(2)原式=
| 6 |
| (x+3)(x-3) |
| 1 |
| x-3 |
=
| 6+x-3 |
| (x+3)(x-3) |
=
| x+3 |
| (x+3)(x-3) |
=
| 1 |
| x-3 |
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