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> 计算:(1)|-2|+(13)-1×(π-2)0-9+(-1)2(2)x2-2xx2-4÷2xx+2+(x+2).-数学
计算:(1)|-2|+(13)-1×(π-2)0-9+(-1)2(2)x2-2xx2-4÷2xx+2+(x+2).-数学
题目简介
计算:(1)|-2|+(13)-1×(π-2)0-9+(-1)2(2)x2-2xx2-4÷2xx+2+(x+2).-数学
题目详情
计算:
(1)
|-2|+(
1
3
)
-1
×(π-
2
)
0
-
9
+(-1
)
2
(2)
x
2
-2x
x
2
-4
÷
2x
x+2
+(x+2)
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=2+3×1-3+1=2+3-3+1=3;
(2)原式=
x(x-2)
(x+2)(x-2)
÷
class="stub"2x
x+2
+(x+2)=
x(x-2)
(x+2)(x-2)
•
class="stub"x+2
2x
+x+2=
class="stub"1
2
+x+2=x+
class="stub"5
2
.
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题目简介
计算:(1)|-2|+(13)-1×(π-2)0-9+(-1)2(2)x2-2xx2-4÷2xx+2+(x+2).-数学
题目详情
(1)|-2|+(
(2)
答案
(2)原式=