mpletion Status: QUESTION 12 Simplify: (6x3 - 2x2 + 9x - 8) + (4x3 - 2x + 6) 9x3-4x² +9x-2 10x3 - 2x² + 7x-2 2x3-2x² + 11x-2 10x³ - 2x2 + 7x - 14 QUESTION 13 Simplify: (-4y3 + y2-y-3) - (-2y3 - 3y + 3) -6y³+ y²-4y 3 -2y6 + y² + 2y-6 -2y³ + y² + 2y-6 -2y6-y²-2y+6

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