\[\boxed{\text{1133\ (1133).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ 4\text{kn} + 6\text{ak} + 6an + 9a^{2} =\]
\[= 2k \cdot (2n + 3a) + 3a \cdot (2n + 3a) =\]
\[= (2n + 3a)(2k + 3a)\]
\[2)\ b^{6} - 4b^{4} + 12b^{2} - 9 =\]
\[= b^{6} - \left( 4b^{4} - 12b^{2} + 9 \right) =\]
\[= b^{6} - \left( 2b^{2} - 3 \right)^{2} =\]
\[= \left( b^{3} - 2b^{2} + 3 \right)\left( b^{3} + 2b^{2} - 3 \right)\]
\[3)\ y^{4}\left( x^{2} + 8x + 16 \right) - a^{8} =\]
\[= y^{4}(x + 4)^{2} - a^{8} =\]
\[= \left( y^{2}(x + 4) - a^{4} \right)\left( a^{4} + y^{2}(x + 4) \right) =\]
\[= \left( xy^{2} + 4y^{2} - a^{4} \right)\left( a^{4} + xy^{2} + 4y^{2} \right)\]
\[4)\ 9x^{2} - 6x - 35 =\]
\[= \left( 9x^{2} - 6x + 1 \right) - 36 =\]
\[= (3x - 1)^{2} - 36 =\]
\[= (3x - 1 - 6)(3x - 1 + 6) =\]
\[= (3x - 7)(3x + 5)\ \]