题目把下列代数式分解因式:(1)3x2−6xy(1)3x^{2}-6xy(1)3x2−6xy；(2)a2−12ab+36b2(2)a^{2}-12ab+36b^{2}(2)a2−12ab+36b2；(3)x−x3(3)x-x^{3}(3)x−x3；(4)a2b+16b3+8ab2(4)a^{2}b+16b^{3}+8ab^{2}(4)a2b+16b3+8ab2.知识点：因式分解章节：数学竞赛 / 数与式
