savyryanrobertson savyryanrobertson 13-01-2021 Mathematics contestada What is the sum of the polynomials? (8x^2 - 9y^2 - 4x) + (x^2 - 3y^2 - 7x) * 7x^2 - 6y^2 + 3x * 9x^2 - 6y^2 + 3x * 9x^2 - 12y^2 + 3x * 9x^2 - 12y^2 - 11x
