9. 1) (a - 46)2 - 8ab - 17b; 3) (5a - 6)2 – (5a - 6)(5a + 6);
5) (9 - 86)(2b + 3) + (46 - 1)?;
2) -9c2 + (3c + d)2 – d;
4) (76 - t)(t + 76) + (7b + t)?;
6) (11c + 3)2 - 2c(5,5c + 33).​

1) (a - 46)2 - 8ab - 17b;

3) (5a - 6)2 – (5a - 6)(5a + 6);

5) (9 - 86)(2b + 3) + (46 - 1)?;

2) -9c2 + (3c + d)2 – d;

4) (76 - t)(t + 76) + (7b + t)?;

6) (11c + 3)2 - 2c(5,5c + 33

Объяснение:

a - 46)2 - 8ab - 17b;

3) (5a - 6)2 – (5a - 6)(5a + 6);

5) (9 - 86)(2b + 3) + (46 - 1)?;

2) -9c2 + (3c + d)2 – d;

4) (76 - t)(t + 76) + (7b + t)?;

6) (11c + 3)2 - 2c(5,5c + 33