xpression below $($do not round$)$

$5x^4(x^2+4{)}^3$

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By using the properties of logarithms or othe

$\frac{d}{dx}(ln(\frac{(x^2+3{)}^5\sqrt[\phantom{2}]{x^2+1}}{x^7}))=$

ession below $($do not round$)$

$\frac{7}{x}$