Simplify 2x 2 4x 6x 2 9 6x 3 July 8, 2019 16 32 64 128 6xy - 4y + 6 - 9x 2x ^ 2 + (4x - 6x ^ 2) + 9 - (6x + 3) Simplify (9x^2 + 6x + 4) - (3x^2 + 2x + 6)