QUESTION IMAGE
Question
simplify.
\sqrt{16t^{3}w^{11}}
assume that all variables represent positive real numbers.
Step1: 分解被开方数
将\(16t^{3}w^{11}\)分解为完全平方数和其他部分的乘积,\(16 = 4^2\),\(t^3=t^2\cdot t\),\(w^{11}=w^{10}\cdot w=(w^5)^2\cdot w\)。
\[
\sqrt{16t^{3}w^{11}}=\sqrt{4^2\cdot t^2\cdot t\cdot (w^5)^2\cdot w}
\]
Step2: 利用根式的性质\(\sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\)(\(a\geq0,b\geq0\))拆分根式
\[
\sqrt{4^2\cdot t^2\cdot t\cdot (w^5)^2\cdot w}=\sqrt{4^2}\cdot\sqrt{t^2}\cdot\sqrt{(w^5)^2}\cdot\sqrt{t\cdot w}
\]
Step3: 计算完全平方数的算术平方根
根据算术平方根的定义,\(\sqrt{a^2}=a\)(\(a\geq0\)),则\(\sqrt{4^2}=4\),\(\sqrt{t^2}=t\),\(\sqrt{(w^5)^2}=w^5\)。
\[
\sqrt{4^2}\cdot\sqrt{t^2}\cdot\sqrt{(w^5)^2}\cdot\sqrt{t\cdot w}=4\cdot t\cdot w^5\cdot\sqrt{tw}
\]
Step4: 整理结果
将各项相乘,得到\(4tw^5\sqrt{tw}\)。
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\(4tw^5\sqrt{tw}\)