Find the order 3 Taylor polynomial T3(x)\displaystyle {T}_{{3}}{\left({x}\right)} of function given. Use exact values.
f(x)=(7x10)21\displaystyle {f{{\left({x}\right)}}}={\left({7}{x}-{10}\right)}^{{\frac{{2}}{{1}}}} at a=2\displaystyle {a}={2}.
T3(x)=\displaystyle {T}_{{3}}{\left({x}\right)}=