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Sumar.
(5x² + 4x³ - 6x - 7) + (- 8x - 5x³ + 3x - 4) =
5x² + 4x³ - 6x - 7 + ( - 5x - 5x³ - 4) =
5x² + 4x³ - 6x - 7 - 5x - 5x² - 4
4x³ + 5x² - 6x - 7
-5x³ - 5x - 4
--------------------------
- x³ + 5x² - 11x - 11
Respuesta.
-x³ + 5x² - 11x - 11