Question

¡Necesito la respuesta!.​

Answer 1

Respuesta:

$1) ({a}^{2} - 9b + 11c - 14 )- ( {a}^{2} - 7b - 8c + 5) = {a}^{2} - 9b + 11c - 14 - {a}^{2} + 7b + 8c - 5 = 16b + 19c - 19$

$2)(3 {x}^{3} - 6x + 3 {x}^{2} - 5) - ( {x}^{3} - 4 {x}^{2} - 5x + 10 ) = 3 {x}^{3} - 6x + 3 {x}^{2} - 5 - {x}^{3} + 4 {x}^{2} + 5x - 10 = 2 {x}^{3} - x + 7 {x}^{2} - 15$

$3)(1 {a}^{2} - 6 {b}^{2} + 8ab) -(3 {a}^{2} + 1ab - 5 {b}^{2} ) = 1 {a}^{2} - 6 {b}^{2} + 8ab - 3 {a}^{2} - 1ab + 5 {b}^{2} = - 2 {a}^{2} - {b}^{2} + 7ab$

$4)(1 {x}^{3} - 6 {x}^{2}y - 1 {y}^{3} ) - (15 {x}^{2}y - 1 {y}^{3} + 6 {x}^{3} ) = 1 {x}^{3} - 6 {x}^{2} y - 1 {y}^{3} - 15 {x}^{2} y + 1 {y}^{3} - 6 {x}^{3} = - 5 {x}^{3} - 21 {x}^{2} y$