计算:(a+2b)(a-2b)(a^2-4b^2)
问题描述:
计算:(a+2b)(a-2b)(a^2-4b^2)
答
(a+2b)(a-2b)(a^2-4b^2)
=(a²-4b²)²
=a^4-8a²b²+16b^4