You are simplifying the following: (3x3+6x2−x−4)−(−4x3+8x2+5x−2) Below is Step 1. Fill in the blanks with the correct sign. (7 points) 3x3 6x2 x 4 4x3 8x2 5x 2
(3x^3 + 6x^2 - x - 4) - (-4x^3 + 8x^2 + 5x - 2)
Step 1: Distribute the negative sign inside the second set of parentheses
= 3x^3 + 6x^2 - x - 4 + __ __ __ __