Question

помогите пожалуйста ​

Answer 1

Ответ:

$(2 - 1)(2 + 1) = {2}^{2} - 1 \\ ( {2}^{2} - 1)( {2}^{2} + 1) = {2}^{4} - 1 \\ ( {2}^{4} - 1)( {2}^{4} + 1) = {2}^{8} - 1 \\ ( {2}^{8} - 1)( {2}^{8} + 1) = {2}^{16} - 1 \\ {2}^{16} - 1 - {2}^{16} = - 1$

$- 2.62 \times 5.31 + {5.31}^{2} + {1.31}^{2} = {5.31}^{2} - 2 \times 1.31 \times 5.31 + {1.31}^{2} = {(5.31 - 1.31)}^{2} = {4}^{2} = 16$