Answer
(4 $x^{2}$ + 3 )( 4x - 7 )
Work Step by Step
16 $x^{3}$ -28 $x^{2}$ + 12x -21 group term
4 $x^{2}$ (4x -7 ) + 3( 4x - 7 ) factor out GCF from each grouping
(4 $x^{2}$ + 3 )( 4x - 7 )
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