If f(x)=\displaystyle {f{{\left({x}\right)}}}=1(5x+1)3\displaystyle \frac{{1}}{{\left({5}{x}+{1}\right)}^{{{3}}}}, find f(x)\displaystyle {f}'{\left({x}\right)} and then compute f(2)\displaystyle {f}'{\left({2}\right)}. Use exact values.

f(x)=\displaystyle {f}'{\left({x}\right)}=    


f(2)=\displaystyle {f}'{\left({2}\right)}=