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> (1)计算:-22+(-3)2+sin30°+|1-3|+(3.14-π)0(2)计算:4a+2+a-2.-数学
(1)计算:-22+(-3)2+sin30°+|1-3|+(3.14-π)0(2)计算:4a+2+a-2.-数学
题目简介
(1)计算:-22+(-3)2+sin30°+|1-3|+(3.14-π)0(2)计算:4a+2+a-2.-数学
题目详情
(1)计算:-2
2
+(-3)
2
+sin30°+|1-
3
|+(3.14-π)
0
(2)计算:
4
a+2
+a-2.
题型:解答题
难度:中档
来源:无锡新区模拟
答案
(1)原式=-4+9+
class="stub"1
2
+
3
-1+1,
=5
class="stub"1
2
+
3
;
(2)原式=
class="stub"4
a+2
+
class="stub"a-2
1
=
class="stub"4
a+2
+
a
2
-4
a+2
,
=
a
2
a+2
.
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题目简介
(1)计算:-22+(-3)2+sin30°+|1-3|+(3.14-π)0(2)计算:4a+2+a-2.-数学
题目详情
(2)计算:
答案
=5
(2)原式=
=
=