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> (1)计算:|-3|+4+(1-2)0-tan45°;(2)化简:a2a-1-a-1.-数学
(1)计算:|-3|+4+(1-2)0-tan45°;(2)化简:a2a-1-a-1.-数学
题目简介
(1)计算:|-3|+4+(1-2)0-tan45°;(2)化简:a2a-1-a-1.-数学
题目详情
(1)计算:
|-3|+
4
+(1-
2
)
0
-tan45°
;
(2)化简:
a
2
a-1
-a-1
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=3+2+1-1
=5;
(2)原式=
a
2
a-1
-
a
2
-1
a-1
=
a
2
-
a
2
+1
a-1
=
class="stub"1
a-1
.
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题目简介
(1)计算:|-3|+4+(1-2)0-tan45°;(2)化简:a2a-1-a-1.-数学
题目详情
(2)化简:
答案
=5;
(2)原式=
=
=