x³y³-1+1/8x³-8y³因式分解

x³y³-1+1/8x³-8y³因式分解
x³y³-1+1/8x³-8y³因式分解

x³y³-1+1/8x³-8y³因式分解
(xy-1)(x^2y^2+xy+1)+1/{(2x-2y)(16x^2y^2+4xy+1)

用立方差公式分解

题不对