32.9.1) (a - 4b)2 - 8ab - 176;
3) (5a - 6)2 – (5a - 6)(5a + 6);
5) (9 - 8b)(2b + 3) + (4b - 1)";
2) -9c2 + (3c + d)2 – dº;
4) (76 – t)(t + 76) + (76 + t) ;
6) (11c + 3)2 – 2c(5,5c + 33).​

manfork    3   18.01.2020 16:57    12