Question

pls answer it..✌️✌️✌️✌️✌️❤️❤️❤️

Answer 1

$HEYA \: \\ \\ x - 2y = 11...Equation \: \: \: (i) \: \\ and \\ xy = 8 \\ \\ cubing \: on \: both \: sides \: in \: equation \: i \: we \: have \: \\ \\ (x - 2y) {}^{3} = (11) {}^{3} \\ \\ x {}^{3} - 8y {}^{3} - 6xy(x -2 y) = 1331 \\ ( \alpha - \beta ) {}^{3} = \alpha {}^{3} - \beta {}^{3} - 3 \alpha \beta ( \alpha - \beta ) \\ \\ \\ x {}^{3} - 8y {}^{3} - 6(8)(11) = 1331 \\ \\ x {}^{3} - 8y {}^{3} = 1331 + 528 \\ \\ x {}^{3} - 8y {}^{3} = 1859$