7.3^2 + 7.3 * 2.7 - 2.3 * 7.3 - 2.3 * 2.7 = 53.29 + 7.3 * 2.7 - 2.3 * 7.3 - 2.3 * 2.7 = 53.29 + 19.71 - 16.79 - 6.21 = 73 - 16.79 - 6.21 = 50
7.3^2 + 7.3 * 2.7 - 2.3 * 7.3 - 2.3 * 2.7 = 53.29 + 7.3 * 2.7 - 2.3 * 7.3 - 2.3 * 2.7 = 53.29 + 19.71 - 16.79 - 6.21 = 73 - 16.79 - 6.21 = 50