\[\boxed{\text{908.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
\[\textbf{а)}\ c^{6} - 9x^{4} = (c^{3} - 3x^{2})(c^{3} + 3x^{2})\]
\[\textbf{б)}\ 100y² - a^{8} = (10y - a^{4})(10y + a^{4})\]
\[\textbf{в)}\ 4x^{4} - 25b^{2} = (2x^{2} - 5b)(2x^{2} + 5b)\]
\[\textbf{г)}\ a^{4}b^{4} - 1 = \left( a^{2}b^{2} - 1 \right)\left( a^{2}b^{2} + 1 \right) = (ab - 1)(ab + 1)(a^{2}b^{2} + 1)\]
\[\textbf{д)}\ 0,36 - x^{4}y^{4} = (0,6 - x²y^{2})(0,6 + x^{2}y^{2})\]
\[\textbf{е)}\ 4a² - b^{6}c^{2} = (2a - b^{3}c)(2a + b^{3}c)\]
\[\textbf{ж)}\ 16m²y² - 9n^{4} = (4my - 3n^{2})(4my + 3n^{2})\]
\[\textbf{з)}\ 9x^{8}y^{4} - 100z^{2} = (3x^{4}y^{2} - 10z)(3x^{4}y^{2} + 10z)\]
\[\textbf{и)}\ 0,81p^{6}m^{4} - 0,01x^{2} = (0,9p^{3}m^{2} - 0,1x)(0,9p^{3}m^{2} + 0,1x)\]