Question

(x2+11x+2)+(-2x2-8x-5)

Answer 1

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$(x {}^{2} + 11x + 2) + (2x {}^{2} - 8x - 5) \\ \\ x {}^{2} + 2x {}^{2} + 11x - 8x + 2 - 5 \\ \\ 3x {}^{2} + 3x - 3$

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R) 3x² + 3x - 3

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Att: MarcosPCV