3x * 2x + 3x * 3 + 2 * 2x + 2 * 3 - (x * x - 2 * x + 4 * x - 4 * 2) = 5x * x + 5x * 1 + 2 * x + 2 * 1;
6x^2 + 9x + 4x + 6 - x^2 + 2x - 4x + 8 = 5x^2 + 5x + 2x + 2;
6x^2 - x^2 - 5x^2 + 9x + 4x + 2x - 4x - 5x - 2x = 2 - 6 - 8;
4x = -12;
x = -3.
3x * 2x + 3x * 3 + 2 * 2x + 2 * 3 - (x * x - 2 * x + 4 * x - 4 * 2) = 5x * x + 5x * 1 + 2 * x + 2 * 1;
6x^2 + 9x + 4x + 6 - x^2 + 2x - 4x + 8 = 5x^2 + 5x + 2x + 2;
6x^2 - x^2 - 5x^2 + 9x + 4x + 2x - 4x - 5x - 2x = 2 - 6 - 8;
4x = -12;
x = -3.