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Mathematics 19 Online
OpenStudy (dtan5457):

Simplify

OpenStudy (dtan5457):

\[(x^6y^4)^{1/8}+2(x^{1/3}y^{1/4})^2\]

OpenStudy (dtan5457):

I ended up with \[2\sqrt{y}+\sqrt[8]{x^6}+\sqrt[3]{2x^2}\]

OpenStudy (dtan5457):

anyone wanna check for me?

OpenStudy (displayerror):

First part: \[\left( x^6y^4 \right)^{\frac{1}{8}} = x^{\frac{3}{4}} y^{\frac{1}{2}}\] Second part: \[2\left( x^{\frac{1}{3}} y^{\frac{1}{4}} \right)^2 = 2x^{\frac{2}{3}}y^{\frac{1}{2}}\] Adding the two, we get \[x^{\frac{3}{4}} y^{\frac{1}{2}} + 2x^{\frac{2}{3}}y^{\frac{1}{2}}\] We can't combine the x terms because the exponents are different. We can, however, factor out the y term: \[y^{\frac{1}{2}} \left( x^{\frac{3}{4}}+ 2x^{\frac{2}{3}} \right) \]

OpenStudy (dtan5457):

Oh right, I can't add the radicals from the parenthesis as it's multiplication

OpenStudy (dtan5457):

right

OpenStudy (displayerror):

Right, that suggests multiplication. You can't change multiplication into addition.

OpenStudy (dtan5457):

is it more simplified to put them as radicals, though?

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