[tex] {a}^{2} - 9 = (a - 3)(a + 3)[/tex]

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

[tex]9 {x}^{2} - 4 = (3x - 2)(3x + 2)[/tex]

[tex]9 {a}^{2} - 16 {m}^{2} = (3a - 4m)(3a + 4m)[/tex]

Возможно тут не +, а минус

[tex] {b}^{2} + 1[/tex]

[tex] {b}^{2} - 1 = (b - 1)(b + 1)[/tex]

[tex]9 - {b}^{4} = (3 - {b}^{2} )(3 + {b}^{2} )[/tex]

[tex]48 {m}^{2} - {n}^{2} = (4 \sqrt{3} m - n)(4 \sqrt{3} m + n)[/tex]

[tex]36 {m}^{6} - 49 {k}^{4} {n}^{2} = (6 {m}^{3} - 7 {k}^{2} n)(6 {m}^{3} + 7 {k}^{2} n)[/tex]

[tex] {x}^{6} - 1.44 = ( {x}^{3} - 1.2)( {x}^{3} + 1.2)[/tex]

[tex] {y}^{12} - 16 = ( {y}^{6} - 4)( {y}^{6} + 4) = ( {y}^{3} - 2)( {y}^{3} + 2)( {y}^{6} + 4)[/tex]

[tex]9 {a}^{2} {b}^{2} - 64 {x}^{4} = (3ab - 8 {x}^{2} )(3ab + 8 {x}^{2} )[/tex]