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\left. \begin{array} { l } { \text { Simplify } : - \frac { 3 } { 2 } a ( 2 a - 3 b + 4 c ) + \frac { 9 } { 2 } \text { and } \text { fir } } \\ { \text { value for } a = 1 , b = - 1 , \text { and } c = - 2 } \end{array} \right. |
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