计算与化简:(1)-(13)-1+(-2)2×(-1)0-|-(23)2|(2)x-32x-4÷(x+2-5x-2).-数学

题目简介

计算与化简:(1)-(13)-1+(-2)2×(-1)0-|-(23)2|(2)x-32x-4÷(x+2-5x-2).-数学

题目详情

计算与化简:
(1)-(
1
3
)-1+(-2)2×(-1)0-|-
(
2
3
)
2
|

(2)
x-3
2x-4
÷(x+2-
5
x-2
)
题型:解答题难度:中档来源:不详

答案

(1)-(class="stub"1
3
)
-1
+(-2)2×(-1)0-|-
(class="stub"2
3
)
2
|

=-class="stub"1
class="stub"1
3
+4×1-|-class="stub"2
3
|
=-3+4-class="stub"2
3

=1-class="stub"2
3

=class="stub"1
3


(2)原式=class="stub"x-3
2(x-2)
÷(
(x+2)(x-2)
x-2
-class="stub"5
x-2
)

=class="stub"x-3
2(x-2)
÷
x2-9
x-2

=class="stub"x-3
2(x-2)
×class="stub"x-2
(x+3)(x-3)

=class="stub"1
2(x+3)

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