Given

${\displaystyle \underset{1}{\overset{5}{}}}f(x)dx=5,{\displaystyle \underset{1}{\overset{5}{}}}(f(x){)}^{2}dx=7,$ and $,{\displaystyle \underset{4}{\overset{8}{}}}g(x)dx=11$

evaluate the following definite integrals. $(3$ points each$)$

$($a$)$

${\displaystyle \underset{-2}{\overset{2}{}}}f(x3)-2g(x6)dx$

$($b$)$

${\displaystyle \underset{1}{\overset{5}{}}}(f(x)-3{)}^{2}dx$

$($c$)$

$({\displaystyle \underset{1}{\overset{5}{}}}2-3f(x)dx{)}^2$