Question

объясните пожалуйста как решить???​

Answer 1

1. (mn) ^2 = (7 * 4) ^2 = 28 ^2 = 784
2. c - 3ab = (-2) - 3 * (-1) * 3 = 7

Answer 2

1 (mn) ^2 = (7 * 4)^2 = 28^2 = 784
2 c-3ab = (-2) - 3 * (-1) * 3 = 7