先化简，再求值： x2+2x+1x+2÷x2−1x−1−1x+2 ，其中x=2．_刷题宝

题干

先化简，再求值：

x
2
+
2
x
+
1
x
+
2

÷−−

x

2

1

x

1

−

1

x

+

2

，其中x=2．

上一题下一题 0.0难度选择题更新时间:2019-03-10 11:42:12

答案(点此获取答案解析）

解：原式=

\frac{{(x + 1)}^{2}}{x + 2} <

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