Find the first, second, third, and fourth derivative of the following function.

f(x)=9x57x4+6x3+2x22x+1\displaystyle {f{{\left({x}\right)}}}=-{9}{x}^{{5}}-{7}{x}^{{4}}+{6}{x}^{{3}}+{2}{x}^{{2}}-{2}{x}+{1}

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

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

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

f(4)(x)=\displaystyle {{f}^{{{\left({4}\right)}}}{\left({x}\right)}}=