Question

решите пожалуйста ОЧЕНЬ НАДО​

Answer 1

в)

$2 {(1 - 3a)}^{2} - 2(3a - 1)(3a + 2) = 2 \times (1 - 6a + 9 {a}^{2} ) - 2 \times (9 {a}^{2} + 6a - 3a - 2) = 2 \times (1 - 6a + 9 {a}^{2} ) - 2 \times (9 {a}^{2} + 3a - 2) = 2 \times ((1 - 6a + 9 {a}^{2} ) - (9 {a}^{2} + 3a - 2)) = 2 \times (1 - 6a + 9 {a}^{2} - 9 {a}^{2} - 3a + 2) = 2 \times (3 - 9a) = 6 - 18a$

г)

${(p + 4)}^{3} - {p}^{3} - 12 {p}^{2} - 14 = {p}^{3} + {4}^{3} + 3 \times p \times 4 \times (p + 4) - {p}^{3} - 12 {p}^{2} - 14 = 64 + 12p \times (p + 4) - 12 {p}^{2} - 14 = 50 + 12 {p}^{2} + 48p - 12 {p}^{2} = 50 + 48p$