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\left. \begin{array} { l } { ( 2 p ^ { 3 } + p ^ { 2 } - 5 p - 2 ) \text { by } ( 2 p + 3 ) } \\ { ( 8 a ^ { 4 } + 10 a ^ { 3 } - 5 a ^ { 2 } - 4 a + 1 ) b y ( 2 a ^ { 2 } + a - 1 ) } \end{array} \right.

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