Question

30. 2x2 - x -21
$i \: am \: mark \: as \: brainleast$
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Answer 1

Answer:

$= > 2 {x}^{2} - x - 21 \\ \\ = > 2 {x}^{2} - (7 - 6)x - 21 \\ \\ = > 2 {x}^{2} - 7x + 6x - 21 \\ \\ = > x(2x - 7) + 3(2x - 7) \\ \\ = > (2x - 7)(x + 3)$