Question

Найдите значение выражения р(х;у) при х=2,376 и у=-1

Answer 1

$p(x.y) = 27 {x}^{3} + (4y - 3x)(16 {y}^{2} + 12xy + 9 {x}^{2} ) = \\ = 27 {x}^{3} + {(4y)}^{3} - {(3x)}^{3} = \\ = 27 {x}^{3} + 64 {y}^{3} - 27 {x}^{3} = 64 {y}^{3} \\ \binom{x = 2.376}{y = - 1} \\ p(x.y)=64 \times {( - 1)}^{3} = - 64$