Simplify the expression and give your answer in the form of $\displaystyle {\frac{{{f{{\left({x}\right)}}}}}{{{g{{\left({x}\right)}}}}}}.$

$\displaystyle {\frac{{{1}}}{{{x}^{{2}}+{4}{x}+{4}}}}-{\frac{{{1}}}{{{x}^{{2}}-{2}{x}-{8}}}}$


Your answer for the function $\displaystyle {f{{\left({x}\right)}}}$ is : Preview Question 6 Part 1 of 2  
Your answer for the function $\displaystyle {g{{\left({x}\right)}}}$ is : Preview Question 6 Part 2 of 2