Question

13.3.1) (x-7)(x + 8); 4) (2-b) (b + 3); 2) (9-y) (y + 5); 5) (10-c) (9- c); 3) (a + 6) (4- a); 6) (d+ 3) (d+ 11).​

Answer 1

Ответ:

1. x²+x-56

4. -b²-b+6

2. -y²+4y+45

5. c²-19ç+90

3. -a²-2a+24

6. d²+14+33