\[a^{10}b^{10} - c^{1000} = (a^5b^5)^2 - (c^{500})^2 = (a^5b^5 - c^{500})(a^5b^5 + c^{500})\]
Ответ: \((a^5b^5 - c^{500})(a^5b^5 + c^{500})\)