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tigry1 [53]
3 years ago
11

Find the simplified product ^3 sqrt 9x^4 * ^3 sqrt 3x^8

Mathematics
2 answers:
Crazy boy [7]3 years ago
8 0

Answer:

3x^4

Step-by-step explanation:

\sqrt[3]{9x^4} \cdot \sqrt[3]{3x^8}

To simplify it we multiply all the terms inside the cube root

\sqrt[3]{9x^4} \cdot \sqrt[3]{3x^8}

\sqrt[3]{9x^4 \cdot 3x^8}

Now we apply exponential property

a^m \cdot a^m = a^{mn}

x^4 \cdot x^8 = x^{12}

\sqrt[3]{9x^4 \cdot 3x^8}

\sqrt[3]{27x^{12}}

Now we take cube root

\sqrt[3]{27}=3

\sqrt[3]{x^{12}}=\sqrt[3]{x^3 \cdot x^3 \cdot x^3 \cdot x^3}=x^4

\sqrt[3]{27x^{12}}

3x^4

AleksAgata [21]3 years ago
6 0

\bf ~\hspace{7em}\textit{rational exponents} \\\\ a^{\frac{ n}{ m}} \implies \sqrt[ m]{a^ n} ~\hspace{10em} a^{-\frac{ n}{ m}} \implies \cfrac{1}{a^{\frac{ n}{ m}}} \implies \cfrac{1}{\sqrt[ m]{a^ n}} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \sqrt[3]{9x^4}\cdot \sqrt[3]{3x^8}\implies (9x^4)^{\frac{1}{3}}\cdot (3x^8)^{\frac{1}{3}}\implies 9^{\frac{1}{3}}\cdot x^{4\cdot \frac{1}{3}}\cdot 3^{\frac{1}{3}}\cdot x^{8\cdot \frac{1}{3}}

\bf 9^{\frac{1}{3}}\cdot 3^{\frac{1}{3}}\cdot x^{\frac{4}{3}}\cdot x^{\frac{8}{3}}\implies (3^2)^{\frac{1}{3}}\cdot 3^{\frac{1}{3}}\cdot x^{\frac{4}{3}+\frac{8}{3}}\implies 3^{\frac{2}{3}}\cdot 3^{\frac{1}{3}}\cdot x^{\frac{12}{3}} \\\\\\ 3^{\frac{2}{3}+\frac{1}{3}}x^4\implies 3^{\frac{3}{3}}x^4\implies 3x^4

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