(a)
\The integral is
.





Apply general power rule of integration
.
.



.
(b)
\The integral is
.





Apply general power rule of integration
.






.
(c)
\The integral is
.





Apply general power rule of integration
.





.
(d) The integral is
.

.
Expand
.
(a)
.
(b)
.
(c)
.
(d)
, Expand
.