(a) Using laws of logarithms, write the expression below using sums and/or differences of logarithmic expressions which do not contain the logarithms of products, quotients, or powers.

$\displaystyle \displaystyle \ln \left| -5 x^{25} \right| =$ help (logarithms)

(b) Use your answer from part (a) to evaluate the derivative.

$\displaystyle \frac{d}{dx} \left( \displaystyle \ln \left| -5 x^{25} \right| \right) =$ help (formulas)