题目内容
计算:
(1)
(2)-2-2+
+
-3-1+(π-3.14)0.
(1)
x-2y-3(-2x-3y-1)-2 |
2-1x2y-3 |
(2)-2-2+
2 |
5 |
1 |
2 |
(1)原式=
=
=
x2y2;
(2)原式=-
+
+
-
+1
=
.
x-2y-3•(-2)-2x6y2 |
2-1x2y-3 |
=
x4y-1•(-2)-2 |
2-1x2y-3 |
=
1 |
2 |
(2)原式=-
1 |
4 |
2 |
5 |
1 |
2 |
1 |
3 |
=
41 |
60 |
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