You are simplifying the following: (3x^3+6x^2−x−4)−(−4x^3+8x^2+5x−2) Below is Step 1. Fill in the blanks with the correct sign. (7 points) 3x^3 6x^2 x 4 4x^3 8x^2 5x 2

(3x^3 + 6x^2 - x - 4) - (-4x^3 + 8x^2 + 5x - 2) = 3x^3 + 6x^2 - x - 4 + 4x^3 - 8x^2 - 5x + 2