Question

solve this question pls
$- 4x + 3x {}^{2} - 7 + 9x - 12x ^{2} - 5x$
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Answer 1

Answer:

$- 4x + {3x}^{2} - 7x + 9x - {12x}^{2} - 5x$

$=> - 4x - 7x + 9x - 5x + 3 {x}^{2} + 12 {x}^{2}$

$=> - 7x + 15 {x}^{2}$

Or

$= > 15 {x}^{2} - 7x$