\left. \begin{array} { c } { ( b ^ { 2 } + 1 ) ( - b ) + ( - b + 1 ) ( 1 - b ^ { 2 } ) } \\ { x ^ { 3 } ( - \frac { 1 } { 4 } x + 1 ) + \frac { 1 } { 2 } x ^ { 2 } ( \frac { 1 } { 2 } x ^ { 2 } - x + 3 ) - x ( \frac { 3 } { 2 } x - 5 ) } \\ { [ 2 a ( a - b ) + b ( 2 a - 3 b ) ] [ 3 b ( a - b ) - 6 a ( \frac { 1 } { 2 } b + \frac { 1 } { 3 } a ) ] } \\ { \frac { 1 } { 2 } ( - a + 1 ) + b ^ { 2 } ( b + 2 a ) + a + b [ ( 2 a - b ) ( a + b ) - 3 a b ] - 2 ( - a ) ^ { 2 } b } \end{array} \right.
Evaluate
1-2b-b^{2},\ \frac{x\left(x^{2}+10\right)}{2},\ 9b^{4}-4a^{4},\ \frac{a+1}{2}
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