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EastWind [94]
3 years ago
8

What is the expression in simplest radical form?

rac%7B2%7D%7B9%7D%20%7D" id="TexFormula1" title="(5x^{4} y^{3})^{\frac{2}{9} }" alt="(5x^{4} y^{3})^{\frac{2}{9} }" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
Vlad [161]3 years ago
5 0

Use the formula a^(x/n) = (n)√a^x   (note it is a small n)

(5x^4y^3)^(2/9) = Small 9

Convert.

\sqrt{9{{(25x^{8})y^9 }}} is your answer

hope this helps

sergey [27]3 years ago
5 0

So here are a few things about exponents you should know:

  1. Fractional exponents to radicals: x^\frac{m}{n}=\sqrt[n]{x^m}
  2. Powering a power: (x^m)^n=x^{m*n}

So firstly, convert the fractional exponent to a radical:

(5x^4y^3)^\frac{2}{9}=\sqrt[9]{(5x^4y^3)^2}

Next, solve the outer power:

\sqrt[9]{(5x^4y^3)^2} =\sqrt[9]{5^2x^{4*2}y^{3*2}} =\sqrt[9]{25x^8y^6}

Your final answer is \sqrt[9]{25x^8y^6}

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