题目内容
化简填空
(1)
= .(2)
= .
(3)
= .(4)
= .
(5)(
)2= .(6)(
)2= .
(7)
= .(8)
= .
(9)(-
)4= .(10)
= .
(1)
| 4 |
| 0.01 |
(3)
| (-2)2 |
| 32+42 |
(5)(
| 3 |
|
(7)
| 02 |
| 10-2 |
(9)(-
| 2 |
(-
|
考点:二次根式的性质与化简
专题:
分析:根据二次根式的性质:①当a≥0时,(
)2=a,②当a≥0时,
=a,当a<0时,
=-a,逐个求出即可.
| a |
| a2 |
| a2 |
解答:解:(1)
=2,
故答案为:2;
(2)
=0.1,
故答案为:0.1;
(3)
=2,
故答案为:2;
(4)
=5,
故答案为:5;
(5)(
)2=3,
故答案为:3;
(6)(
)2=
,
故答案为:
;
(7)
=0,
故答案为:0;
(8)
=10-1=
,
故答案为:
;
(9)(-
)4=4,
故答案为:4;
(10)
=(-
)-2=
,
故答案为:
.
| 4 |
故答案为:2;
(2)
| 0.01 |
故答案为:0.1;
(3)
| (-2)2 |
故答案为:2;
(4)
| 32+42 |
故答案为:5;
(5)(
| 3 |
故答案为:3;
(6)(
|
| 2 |
| 3 |
故答案为:
| 2 |
| 3 |
(7)
| 02 |
故答案为:0;
(8)
| 10-2 |
| 1 |
| 10 |
故答案为:
| 1 |
| 10 |
(9)(-
| 2 |
故答案为:4;
(10)
(-
|
| 2 |
| 3 |
| 9 |
| 4 |
故答案为:
| 9 |
| 4 |
点评:本题考查了二次根式的性质的应用,注意:①当a≥0时,(
)2=a,②当a≥0时,
=a,当a<0时,
=-a,
| a |
| a2 |
| a2 |
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