Question

прошу-умоляю, во вложении

Answer 1

а)
$1){x}^{3} - {x}^{2} - x + 10 = {x}^{3} + {2x}^{2} - 3 {x}^{2} - 6x + 5x + 10 = {x}^{2} (x + 2) - 3x(x + 2) + 5(x + 2) = (x + 2)( {x}^{2} - 3x + 5)$
$2) \frac{( {x}^{2} - 3x + 5)(x + 2) }{(x + 2)} = {x}^{2} - 3x + 5$