Question

(a的平方-4b的平方)(a的四次方-8a的平方b的平方+16b的四次方)

Answer 1

(a²-4b²)(a^4-8a²b²+16b^4)

=(a+2b)(a-2b)(a²-4b²)²

=(a+2b)^3 * (a-2b)^3