Answer
$-3x^{2}-8x-11$
Work Step by Step
$-3x^{2}-5x+1 - (3x+12)$
$-3x^{2}-5x+1 - 3x-12$
Combine like terms.
$-3x^{2}-5x- 3x +1 -12$
$-3x^{2}-8x -11$
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