Simplify 4 3x 2 8x 3 7x 3 12x 5 6x 2 July 8, 2019 16 32 64 128 Simplify (3x4 + 9x3 – 7x + 15) + (–6x4 – 8x2 + 5x – 3) Simplify (2x 3 − 4x 2 + 8x + 12) − (x 3 + 5x 2 − 7x + 10)
