Question

13.4. 1)(b + 3) (b²-b-7); 3) (a + 4) (a² + a-2);
плз братцы ​

Answer 1

Ответ:

1)(b+3)(b²-b-7)

b(b²-b-7)+3(b²-b-7)

b³-b²-7b+3b²-3b-21

b³+2b²-10b-21

3)(a+4)(a²+a-2)

a(a²+a-2)+4(a²+a-2)

a³+a²-2a+4a²+4a-8

a³+5a²+2a-8