\[\boxed{\text{926.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
\[\textbf{а)}\ c³ + b^{6} =\]
\[= (c + b^{2})(c^{2} - cb^{2} + b^{4})\]
\[\textbf{б)}\ a^{9} - b^{6} =\]
\[= (a^{3} - b^{2})(a^{6} + a^{3}b^{2} + b^{4})\]
\[\textbf{в)}\ x^{6} - 8 =\]
\[= (x^{2} - 2)(x^{4} + 2x^{2} + 4)\]
\[\textbf{г)}\ 27 + y^{9} =\]
\[= (3 + y^{3})(9 - 3y^{3} + y^{6})\]