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A2x²-11x-39

B-2x²+11x+39

C-2x²+11x-39

D2x²+11x-39

Answer:

$x^2+5x-12-3(x^2-2x+9)$

$x^2+5x-12-3x^2+6x-27$

$-2x^2+11x-39$

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