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> 若m等于它的倒数,则分式m2+4m+4m2-4÷m2+2mm-2的值为______.-数学
若m等于它的倒数,则分式m2+4m+4m2-4÷m2+2mm-2的值为______.-数学
题目简介
若m等于它的倒数,则分式m2+4m+4m2-4÷m2+2mm-2的值为______.-数学
题目详情
若m等于它的倒数,则分式
m
2
+4m+4
m
2
-4
÷
m
2
+2m
m-2
的值为______.
题型:填空题
难度:中档
来源:宝坻区二模
答案
∵m等于它的倒数,
∴m=±1,
∴
m
2
+4m+4
m
2
-4
÷
m
2
+2m
m-2
=
(m+2)
2
(m+2)(m-2)
•
class="stub"m-2
m(m+2)
=
class="stub"1
m
=±1
.
上一篇 :
计算:(1)x(2-1x)+xx2-2x•(x2-4);(2
下一篇 :
(1)异分母分式相加减,先______变
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题目简介
若m等于它的倒数,则分式m2+4m+4m2-4÷m2+2mm-2的值为______.-数学
题目详情
答案
∴m=±1,
∴