Verified answer

Ответ:

а)

[tex]2 {x}^{2} - xy = x(2x - y)[/tex]

б)

[tex]4x - 4y + ax - ay = 4(x - y) + ax - ay = 4(x - y) + a(x - y) = (x - y)(4 + a)[/tex]

в)

[tex] {ab}^{2} - {ac}^{2} = a( {b}^{2} - {c}^{2} ) = a(b - c)(b + c)[/tex]

(◇~◇)

уу