9.1E:练习
- Page ID
- 204462
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使用平方根简化表达式
在以下练习中,进行简化。
\(\sqrt{36}\)
- 回答
-
6
\(\sqrt{4}\)
\(\sqrt{64}\)
- 回答
-
8
\(\sqrt{169}\)
\(\sqrt{9}\)
- 回答
-
3
\(\sqrt{16}\)
\(\sqrt{100}\)
- 回答
-
10
\(\sqrt{144}\)
\(−\sqrt{4}\)
- 回答
-
−2
\(−\sqrt{100}\)
\(−\sqrt{1}\)
- 回答
-
−1
\(−\sqrt{121}\)
\(\sqrt{−121}\)
- 回答
-
不是实数
\(\sqrt{−36}\)
\(\sqrt{−9}\)
- 回答
-
不是实数
\(\sqrt{−49}\)
\(\sqrt{9+16}\)
- 回答
-
5
\(\sqrt{25+144}\)
\(\sqrt{9}+\sqrt{16}\)
- 回答
-
7
\(\sqrt{25}+\sqrt{144}\)
在以下练习中,估计两个连续整数之间的每个平方根。
\(\sqrt{70}\)
- 回答
-
\(8<\sqrt{70}<9\)
\(\sqrt{55}\)
\(\sqrt{200}\)
- 回答
-
\(14<\sqrt{200}<15\)
\(\sqrt{172}\)
在以下练习中,将每个平方根近似并四舍五入到小数点后两位。
\(\sqrt{19}\)
- 回答
-
4.36
\(\sqrt{21}\)
\(\sqrt{53}\)
- 回答
-
7.28
\(\sqrt{47}\)
使用平方根简化变量表达式
在以下练习中,进行简化。
\(\sqrt{y^2}\)
- 回答
-
y
\(\sqrt{b^2}\)
\(\sqrt{a^{14}}\)
- 回答
-
\(a^7\)
\(\sqrt{w^{24}}\)
\(\sqrt{49x^2}\)
- 回答
-
\(7x\)
\(\sqrt{100y^2}\)
\(\sqrt{121m^{20}}\)
- 回答
-
\(11m^{10}\)
\(25h^{44}\)
\(\sqrt{81x^{36}}\)
- 回答
-
\(9x^{18}\)
\(\sqrt{144z^{84}}\)
\(−\sqrt{81x^{18}}\)
- 回答
-
\(−9x^9\)
\(−\sqrt{100m^{32}}\)
\(−\sqrt{64a^2}\)
- 回答
-
\(−8a\)
\(−\sqrt{25x^2}\)
\(\sqrt{144x^{2}y^{2}}\)
- 回答
-
\(12xy\)
\(\sqrt{196a^{2}b^{2}}\)
\(\sqrt{169w^{8}y^{10}}\)
- 回答
-
\(13w^{4}y^{5}\)
\(\sqrt{81p^{24}q^{6}}\)
\(\sqrt{9c^{8}d^{12}}\)
- 回答
-
\(3c^{4}d^{6}\)
\(\sqrt{36r^{6}s^{20}}\)
日常数学
D@@ ecoring Denise 想在她的新淋浴间里装点名牌瓷砖的方形装饰。 她买得起625平方厘米的名牌瓷砖。 口音的一面能持续多久?
- 回答
-
25 厘米
装饰莫里斯想在他的新露台上镶嵌一块方形马赛克。 他的预算允许购买2025年平方英寸的瓷砖。 马赛克的一面能持续多久?
写作练习
为什么没有实数等于\(\sqrt{−64}\)?
- 回答
-
答案会有所不同。
和有什么区\(9^{2}\)别\(\sqrt{9}\)?
自检
ⓐ 完成练习后,使用这份清单来评估你对本节目标的掌握程度。
ⓑ 在 1-10 的等级中,根据你在清单上的回复,你会如何评价你对本节的掌握程度? 你怎么能改善这个?


