megan64893 megan64893 27-10-2022 Mathematics contestada Simply the expression completely (12x^2 + 12x + 5) + (-x^2 - 1) = 13x^2 +12x + 6 13x^4 + 12x^2 + 6 11x^4 +12x^2 + 4 23x^6 + 4 23x^3 + 4 11x^2 + 12x + 4