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A2x²-11x-39

B-2x²+11x+39

C-2x²+11x-39

D2x²+11x-39

Answer:

C. -2x²+11x-39

Read Explanation:

x2+5x−12−3(x2−2x+9)x^2+5x-12-3(x^2-2x+9)

x2+5x−12−3x2+6x−27x^2+5x-12-3x^2+6x-27

−2x2+11x−39-2x^2+11x-39

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