Question

reduce la siguiente expresion

Answer 1

Recuerda:

${x}^{3} - {y}^{3} = (x - y)( {x}^{2} + xy + {y}^{2} )$

...

$E = \frac{ {x}^{3} - 27 }{ {x}^{2} + 3x + 9 } \\ E = \frac{ {x}^{3} - {3}^{3} }{ {x}^{2} + 3x + 9 } \\ E = \frac{(x </p><p>- 3)( {x}^{2} + 3x + 9 }{ {x}^{2} + 3x + 9} \\ E = x </p><p>- 3$