Evaluate the Following Integrals:
(A) $\int ( x + \sin x ) ^ { 2 } d x$

Essay

Evaluate the following integrals:
(a) $\int ( x + \sin x ) ^ { 2 } d x$ (b) $\int x e ^ { x ^ { 2 } + 1 } d x$ (c) $\int _ { 0 } ^ { x / 2 } \cos x \sin ^ { 3 } x d x$ (d) $\int \frac { 7 x - 23 } { x ^ { 2 } - 7 x + 12 } d x$