= 1) (x² + y² 25, x + y = 7; 2) x2 + 3 xy + y2 = -1, | x3 + y² = 7; 3) x² – + y² 2 xy + y2 = 25, 232 – 2 xy - y2 = 11.

tcacencoanastap08j8v    3   05.09.2021 15:52    0