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| 1. |
\left. \begin{array} { l } { \text { Which of the following is the factor of } 4 a ^ { 2 } + b ^ { 2 } - 4 a b + 2 b - 4 a + 1 } \\ { ( A ) ( a - b ) } \\ { ( C ) ( a - b + 2 ) } \\ { \text { Facionize } a ^ { 3 } + ( b - a ) ^ { 3 } - b ^ { 3 } } \end{array} \right. |
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