Question

Ребята,помогите пожалуйста!!!
Срочно ​

Answer 1

Ответ:

1.

а)

$ab - 7a + 3b - 21$

б)

$6 {x}^{3} + 3 {x}^{2} - 2x - 1$

в)

${x}^{3} - {x}^{2} - 3x + 2 {x}^{2} - 2x - 6 = \\ {x}^{3} + {x}^{2} - 5x - 6$

г)

$- 4( {y}^{2} + 5y - y - 5) = \\ = - 4( {y}^{2} + 4y - 5) = \\ = - 4 {y}^{2} - 16y + 20$

2.

$8p - ( {6p}^{2} - 15p + 16p - 40) = \\ = 8p - (6 {p}^{2} + p - 40) = \\ = 8p - 6 {p}^{ 2} - p + 40 = \\ = 7p - 6 {p}^{2} + 40$