Question

ayudenme es examennn​

Answer 1

Respuesta:

1-

$b( {a}^{2} - ab + 1) = {a}^{2} b - {ab}^{2} + b$

2.-

$( {a}^{2} + a)(a - 1) = {a}^{2} - a$

3.-

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