(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
.