Question

решите пожалуйста срочно ​

Answer 1

$( {x}^{2} - 5)( {x}^{2} + 5) = {x}^{4} - 25 \\ (4 + {y}^{2} )( {y}^{2} - 4) = {y}^{4} - 16 \\ (9a - {b}^{2} )( {b}^{2} + 9a) = 81 {a}^{2} - {b}^{4} \\ (0.7x + {y}^{2} )(0.7x - {y}^{2} ) = 0.49 {x}^{2} - {y}^{4} \\ (10 {p}^{2} - 0.3 {q}^{2} )(10 {p}^{2} + 0.3 {q}^{2} ) = 100 {p}^{4} - 0.09 {q}^{4} \\ ( {a}^{3} - {b}^{2} )( {a}^{3} + {b}^{2} ) = {a}^{9} - {b}^{4} \\ ( {c}^{4} + {d}^{2} )( {d}^{2} - {c}^{4}) = {d}^{4} - {c}^{16} \\ (5 {x}^{2} + 2 {y}^{3} )(5 {x}^{2} - 2 {y}^{3} ) = 5 {x}^{4} - 4 {y}^{9} \\ (1.4c - 0.7 {y}^{3} )(0.7 {y}^{3} + 1.4c) = 1.96 {c}^{2} - 0.9 {y}^{9} \\ (1.3 {a}^{5} - 0.1 {b}^{4} )(1.3 {a}^{5} + 0.1 {b}^{4} ) = 1.69 {a}^{25} - 0.01 {b}^{16}$