Question

Всп баллы все на фото !!!!!

Answer 1

Объяснение:

1.

1)

$(a + 4 {)}^{2} = {a}^{2} + 8a + 16$

2)

$(2a - 5)(2a + 5) = 4 {a}^{2} - 25$

3)

$( {x}^{2} - 3 {)}^{3} = {x}^{6} - 27$

2.

1)

$0.36 - {c}^{2} = (0.6 - c)(0.6 + c)$

2)

${a}^{2} + 10a + 25 = (a + 5 {)}^{2}$

3)

${x}^{3} + 8 {d}^{3} = (x + 2d)( {x}^{2} - 2xd + 4 {d}^{2} )$

3.

$(a - 2b {)}^{2} + 4b(a - b) \\ \\ {a }^{2} - 4ab + 4 {b}^{2} + 4ba - 4 {b}^{2} = \\ = {a}^{2} = (1.2 {)}^{2} = 2.4$