$(1)$

${\displaystyle \underset{0}{\overset{1}{}}}(4x+x^4)(10x^2+x^5{)}^{6}dx$

$(2)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}4xcos(2-3x)dx$

$(3)$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}{x}^{2}sin(x)dx$

Please evaluate and explaon each step so i can bwttwr understand$($: thank youu!