разложите на множители
[tex]1) { 2x}^{2} - xy[/tex]
[tex]2) {2y}^{4} + {6y}^{3} - {4y}^{2} [/tex]
[tex]3)2a(a - 1) + 3(a - 1)[/tex]
[tex]4)4x - 4y + ax - ay[/tex]
[tex]5) {x}^{2} - 25[/tex]
[tex]6) {ab}^{2} - {ac}^{2} [/tex]
[tex]7) { - 3a}^{2} - 6ab { - 3b}^{2} [/tex]





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Ответ:

[tex]1)2 {x}^{2} - xy = x(2x - y)[/tex]

[tex]2)2 {y}^{4} + 6 {y}^{3} - 4 {y}^{2} = 2 {y}^{2} ( {y}^{2} + 3y - 2)[/tex]

[tex]3)2a(a - 1) + 3(a - 1) = (a - 1)(2a + 3)[/tex]

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

[tex]5) {x}^{2} - 25 = (x - 5)(x + 5)[/tex]

[tex]6) {ab}^{2} - {ac}^{2} =a ( {b}^{2} - {c}^{2} ) = a(b - c)(b + c)[/tex]

[tex]7) - 3 {a}^{2} - ab - 3 {b}^{2} = - 3( {a}^{2} + 2ab + {b}^{2} ) = - 3(a + b) {}^{2} [/tex]